June 2025 discussion-obs: Summerlike

[Sundog]

Just now, LibertyBell said:

it's 90 here already just like it was yesterday here at 7:45 am lol

You're not getting as hot as yesterday though, the atmosphere is "cooler." You already had best case scenario conditions yesterday.

[bluewave]

13 minutes ago, LibertyBell said:

it's also very rare to hold back the sea breeze like that.  If it happens again my guess would be between July 20-31? Like with a November snowstorm, doesn't it take awhile for the pattern to reload?

I think we could hit 100 again today and then our next chance might be in 4 weeks.

It’s possible that the next chance may be during the 2nd half of July at a lower level than this one was. The trough out West was very impressive. Though the cooler air is highly limited in the Northern Hemisphere with all the record heat, that area did manage to see some record lows. This matches the pattern of recent years with our warmest temperatures occurring with deep Western Troughs. Looks like the rain on the weekends pattern is set to continue.

 

 

 

[SACRUS]

 

85 / 70.   Strong heat for the next 28 - 32 hours. More mid - upper 90s and hotter locations may touch the century mark.   Ridge pushed south tomorrow with clouds and onshore flow becoming established - if enough sun some placed will extend the heatwave to 5 days  / 4 days.   Showers storms Thu pm / evening.  Friday 30-40 degrees cooler with onshore flow cooled highs approaching 70 or upper 60s, with some showers/storms around. 

The weekend looks to continue the wet streak although there should be periods of drier / in/out Florida style sunshine.  Sun gets it hot quick and upper 80s - low 90s.  More of the same Sun - Mon.  Loclized storms 1 - 2 inches. 

Drier by Tue (7/1) and through the end of next week. 

Beyond there may be caught between the ridges for a period so perhaps a bit unsettled before ridge build heights and heat north and east beyond.

 

6/25:   Strong heat
6/26 - 6/27:   Cool down - onshore clouds - showers-storms
6/28 - 7/1 :   Steam warm - hot , storms each day
7/2 - 7/4 : Drier near normal 
7/5 - 7/8 : Wetter / caught between ridges
7/9  beyond :  Hotter - ridge heat building north - east

[LibertyBell]

9 minutes ago, Sundog said:

You're not getting as hot as yesterday though, the atmosphere is "cooler." You already had best case scenario conditions yesterday.

I'm thinking 100 is possible though.  Like in July 2011, July 22, 2011 was best case scenario when I reached 105.6 and still got to 101 in slightly less ideal conditions on July 23, 2011.  I think that was the last time the entire area reached 100+ two days in a row.

[ForestHillWx]

84/72… last day of this for a while thankfully. 

[Stormlover74]

The weekend will hopefully be salvaged. Looks to warm up and while there will be showers around certainly not a washout or a continuation of Friday's weather

[LibertyBell]

1 minute ago, Stormlover74 said:

The weekend will hopefully be salvaged. Looks to warm up and while there will be showers around certainly not a washout or a continuation of Friday's weather

Sunday looks fine.

[bluewave]

23 minutes ago, LibertyBell said:

Sunday looks fine.

Same theme. Just enough rain to keep the rain on the weekend streak going. But not enough for a complete wash out. But there could be a least some rain each day. Though the best beach weather continues to be on the weekdays. So it’s no surprise the models have a stalled front and rain chances for the July 4th weekend with weak waves of low pressure.

 

[SACRUS]

 

Records:

Highs:

 

EWR: 100 (19433)
NYC: 99 (1952)
LGA: 99 (1952)
JFK: 94 (2003)


Lows:

EWR: 53 (1932)
NYC: 53 (1873)
LGA: 55 (1940)
JFK: 54 (1965)

Historical:

 

1749 - A general fast was called on account of drought in Massachusetts. It was the year of the famous dry spring in which fields and villages burned. (David Ludlum)

1925 - The mercury hit 101 degrees at Portland, OR, their earliest 100 degree reading of record. (Sandra and TI Richard Sanders)

1953 - The temperature at Anchorage soared to 86 degrees, their hottest reading of record. (The Weather Channel)

 

1957: Hurricane Audrey moved northward, slowly strengthening until the 26th. At that time, a strong upper-level trough led to its acceleration and the hurricane deepened rapidly on its final approach to the Texas/Louisiana border. Audrey became the strongest hurricane on record for June upon landfall, as it reached category four strength. Its acceleration was unanticipated, and despite hurricane warnings in place, 418 people perished in the storm, mainly across southwest Louisiana.

 

1981: Late afternoon violent thunderstorms moved across the region. Allentown, PA recorded a gust to 77 mph, with quite a few roofs blown off, chimneys toppled, windows blown in, several barns blown over, and innumerable trees felled. Power was interrupted to almost 100,000 customers, some without power for several days. Heavy rain caused flooding and mudslides. Philadelphia, PA received 1.91 inches of rain. (Ref. Wilson Wx. History)

1983: A quarter of an inch of early summer snow was reported near the towns of Sharon and Hartford in the higher terrain of central Vermont. (Ref. Wilson Wx. History)

1987 - Afternoon highs of 97 degrees at Miami, FL, 107 degrees at Medford, OR, and 111 degrees at Redding CA were new records for the date. It was the third of six straight days of record heat for Miami. Thunderstorms produced wind gusts to 70 mph at Austin, and gusts to 75 mph at Tulsa OK. (The National Weather Summary) (Storm Data)

1988 - Fifty-two cities in the central and eastern U.S. reported record high temperatures for the date. Highs of 100 degrees at Erie, PA, and 104 degrees at Cleveland OH established all- time records for those two locations. Highs of 101 degrees at Flint, MI, 105 degrees at Chicago, IL, and 106 degrees at Fort Wayne, IN, equalled all-time records. Thunderstorms in Idaho produced wind gusts to 100 mph west of Bliss and north of Crouch, injuring 29 persons. (The National Weather Summary) (Storm Data)

1989 - Tropical depression Allison, the remnants of what was earlier Cosme (a hurricane over the Pacific Ocean which dissipated as it crossed northern Mexico), began to spread heavy rain into southeast Texas and southwest Louisiana. (The National Weather Summary)

 

1990: Borrego Springs, CA hit 122°; their hottest temperature on record. Phoenix, AZ set a daily record high of 120°. (Ref. Wilson Wx. History)

1994: Blistering heat prevailed across the southwest deserts as many daily record highs were set including: Yuma, AZ: 119°, Tucson, AZ: 115° and Winslow, AZ: 103 °F. (Ref. Wilson Wx. History)

1995: Flood in Orange, Madison, Green, & Culpeper Co. as they had between 13.00 and 15.00 inches of rain.
A lifeguard at a camping resort S of Myrtle Beach, SC, was hit by a lightning bolt as he was in the process of clearing the beach due to an approaching storm. He survived. Several people nearby noted “tingling sensations” when the bolt struck. (Ref. Weather Guide Calendar with Phenomenal Weather Events 2011 Accord Pub. 2010, USA)



2006: The precipitation total on June 25th was 5.31 inches, a new 26 year MAXIMUM precipitation record for a day. The old record was for a calendar day was ONLY 3.86 inches on October 8, 2005.

2006: The maximum one hour rainfall intensity was 2.35 inches on the 25th which shattered the previous record not only for June but for any month. The previous 26-year record was 1.74 inches on July 28, 2000. (Annandale Weather Records)

2008: Missouri:
Thunderstorms deluge northern Missouri and sections of central Illinois with 6 to 8 inches of rain. Linneus, Missouri was hardest hit with 8.61 inches while nearby Ethel reported 7.88 inches and Gallatin 6.80 inches. (Ref. WxDoctor)

[SACRUS]

31 minutes ago, LibertyBell said:

Sunday looks fine.

 

Front nearby - think it'll be a game time forecast - sun is out it heats up quickly - Florida style weather after the 36 hour Friday's So-Cal June gloom style weather.

[SACRUS]

 

Outside a rogue storm in CPA , quiet.  

 

[SACRUS]

1 hour ago, LibertyBell said:

I'm thinking 100 is possible though.  Like in July 2011, July 22, 2011 was best case scenario when I reached 105.6 and still got to 101 in slightly less ideal conditions on July 23, 2011.  I think that was the last time the entire area reached 100+ two days in a row.

RIght.  If you account for the Park's tendency Jul 2013 was also.  We'll see how strong the heat can get with the next ridge later next month / Aug.

[donsutherland1]

Historical tidbit while temperatures climb. Since 1869, Central Park has had 39 days with low temperatures of 81° or above. All 39 days had highs of 90° or above. The lowest high occurred on July 3, 1876 when the low was 81° and the high was 90°. 

[Dark Star]

2 hours ago, JerseyWx said:

Urban Heat Island effect??

Just the opposite.  I can't say the the Urban Heat Island effect was responsible for THI values over 100 for such a large area.

[SACRUS]

 

93/ 73 Dew point temps up a bit

[bluewave]

11 hours ago, JerseyWx said:

I can't imagine being above 90 as we approach midnight.  It's so crazy looking at Wundermap right now around Manhattan, Brooklyn, etc.  I've never experiened a phenomenon like that.  Textbook example of the UHI.

79 here.

Yeah, UHI is the reason that only the urban centers experienced 80° minimums during this heatwave. But the reason for the record minimums across all rural and urban sites is the warmer climate supporting higher dewpoints. So a 70° minimum at MPO and an 80° minimum in NYC during June are similar warm monthly minimum benchmarks for each location. 

The urban center around NYC is lucky that they didn’t experience a low minimum temperature as extreme as BTV did several years back. This is when BTV recorded their first 80° minimum. An equivalent record low minimum around NYC Metro would be 88°. Thankfully this hasn’t happened yet. But maybe in the coming decade somebody in NYC gets their first low max just under 90°.
 

RECORD EVENT REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
0200 AM EDT TUE JUN 24 2025

...RECORD DAILY AND MONTHLY HIGH TEMPERATURE AND RECORD WARMEST LOW 
TEMPERATURE SET AT MOUNT POCONO PA...

A RECORD HIGH TEMPERATURE OF 93 DEGREES WAS SET AT MOUNT POCONO PA
YESTERDAY. THIS BREAKS THE OLD RECORD OF 90 DEGREES SET IN 1908.

THIS WAS THE FIRST 90 DEGREE OR HIGHER TEMPERATURE IN THE MOUNT 
POCONO AREA IN 12 YEARS, WHEN THE HIGH TEMPERATURE WAS 90 DEGREES ON 
JULY 19, 2013. THIS WAS ALSO THE HOTTEST TEMPERATURE IN THE MOUNT 
POCONO AREA SINCE JULY 18, 2012, WHEN THE HIGH TEMPERATURE WAS 94 
DEGREES. ADDITIONALLY, THIS WAS THE WARMEST JUNE TEMPERATURE ON 
RECORD IN THE MOUNT POCONO AREA SINCE RECORDS BEGAN. THE PREVIOUS 
RECORD WARMEST JUNE TEMPERATURE WAS 92 DEGREES SET BACK ON JUNE 24, 
1914... JUNE 9, 1933... AND JUNE 26, 1952.

IN ADDITION TO THE RECORD HIGH TEMPERATURE, A RECORD WARMEST LOW 
TEMPERATURE OF 70 DEGREES WAS ALSO SET AT MOUNT POCONO PA YESTERDAY. 
THIS BREAKS THE OLD RECORD OF 69 DEGREES SET IN 2024.

TEMPERATURE RECORDS FOR THE MOUNT POCONO PA AREA DATE BACK TO 1901.

[SACRUS]

 

Not ideal when dealing with convective rains but you can see as the ridge pulls back it'll turn wetter with frequent storm chances starting Thu - jul 2 then again jul 5 -7

 

[TheClimateChanger]

33 minutes ago, bluewave said:

Yeah, UHI is the reason that only the urban centers experienced 80° minimums during this heatwave. But the reason for the record minimums across all rural and urban sites is the warmer climate supporting higher dewpoints. So a 70° minimum at MPO and an 80° minimum in NYC during June are similar warm monthly minimum benchmarks for each location. 

The urban center around NYC is lucky that they didn’t experience a low minimum temperature as extreme as BTV did several years back. This is when BTV recorded their first 80° minimum. An equivalent record low minimum around NYC Metro would be 88°. Thankfully this hasn’t happened yet. But maybe in the coming decade somebody in NYC gets their first low max just under 90°.
 

RECORD EVENT REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
0200 AM EDT TUE JUN 24 2025

...RECORD DAILY AND MONTHLY HIGH TEMPERATURE AND RECORD WARMEST LOW 
TEMPERATURE SET AT MOUNT POCONO PA...

A RECORD HIGH TEMPERATURE OF 93 DEGREES WAS SET AT MOUNT POCONO PA
YESTERDAY. THIS BREAKS THE OLD RECORD OF 90 DEGREES SET IN 1908.

THIS WAS THE FIRST 90 DEGREE OR HIGHER TEMPERATURE IN THE MOUNT 
POCONO AREA IN 12 YEARS, WHEN THE HIGH TEMPERATURE WAS 90 DEGREES ON 
JULY 19, 2013. THIS WAS ALSO THE HOTTEST TEMPERATURE IN THE MOUNT 
POCONO AREA SINCE JULY 18, 2012, WHEN THE HIGH TEMPERATURE WAS 94 
DEGREES. ADDITIONALLY, THIS WAS THE WARMEST JUNE TEMPERATURE ON 
RECORD IN THE MOUNT POCONO AREA SINCE RECORDS BEGAN. THE PREVIOUS 
RECORD WARMEST JUNE TEMPERATURE WAS 92 DEGREES SET BACK ON JUNE 24, 
1914... JUNE 9, 1933... AND JUNE 26, 1952.

IN ADDITION TO THE RECORD HIGH TEMPERATURE, A RECORD WARMEST LOW 
TEMPERATURE OF 70 DEGREES WAS ALSO SET AT MOUNT POCONO PA YESTERDAY. 
THIS BREAKS THE OLD RECORD OF 69 DEGREES SET IN 2024.

TEMPERATURE RECORDS FOR THE MOUNT POCONO PA AREA DATE BACK TO 1901.

Not true at all. There have been numerous low temperatures near or even above 80F in rural areas during this heatwave.

Hayward in northern rural Wisconsin had a low of 80F on the 22nd, which broke the monthly record by 5F and fell just 1F shy of the New York City (Central Park) monthly record: National Weather Service 

You don't get much more rural than Hayward, Wisconsin (pop: 2,500; county-wide pop: ~18,000).

Parts of rural Michigan had lows around 80F:

As did Minnesota. The 88F is probably overdone, but I did see one rural AWOS site with a low of 86F.

Likewise, Iowa and Nebraska saw a number of 80+ lows, including in rural or lower density locations.

[winterwx21]

42 minutes ago, SACRUS said:

 

Not ideal when dealing with convective rains but you can see as the ridge pulls back it'll turn wetter with frequent storm chances starting Thu - jul 2 then again jul 5 -7

 

I just hope our dry July 4th holds, but of course accuracy at this range isn't very good. 

[bluewave]

33 minutes ago, TheClimateChanger said:

Not true at all. There have been numerous low temperatures near or even above 80F in rural areas during this heatwave.

Hayward in northern rural Wisconsin had a low of 80F on the 22nd, which broke the monthly record by 5F and fell just 1F shy of the New York City (Central Park) monthly record: National Weather Service 

You don't get much more rural than Hayward, Wisconsin (pop: 2,500; county-wide pop: ~18,000).

Parts of rural Michigan had lows around 80F:

 

Take it easy. I was just commenting on our local area. Our minimums haven’t been as extreme as the Upper Midwest has been experiencing this year. UHI is the differential between urban and rural areas. But luckily the urban areas haven’t seen the minimums as extreme as the rural ones have especially like Wisconsin and International Falls back in May.

Around NYC Metro it’s very difficult for the minimums to remain above 80° outside the urban centers. We have been fortunate so far not to have experienced the low temperature extremes necessary for spots outside NYC to stay above 80° for low temperatures in recent years. 

So while both urban and rural areas around NYC have seen a record number of low maxes in recent years, the most extreme all-time low maxes have been going to our north. 

[TheClimateChanger]

35 minutes ago, TheClimateChanger said:

Not true at all. There have been numerous low temperatures near or even above 80F in rural areas during this heatwave.

Hayward in northern rural Wisconsin had a low of 80F on the 22nd, which broke the monthly record by 5F and fell just 1F shy of the New York City (Central Park) monthly record: National Weather Service 

You don't get much more rural than Hayward, Wisconsin (pop: 2,500; county-wide pop: ~18,000).

Parts of rural Michigan had lows around 80F:

As did Minnesota. The 88F is probably overdone, but I did see one rural AWOS site with a low of 86F.

Likewise, Iowa and Nebraska saw a number of 80+ lows, including in rural or lower density locations.

Sorry if this comes across as unduly harsh @bluewave. Certainly, appreciate your posts, but we do need to be careful about speaking in absolutes. There were plenty of rural areas that saw similar low temperatures, maybe not along the east coast where dews were lower. However, if the east coast had seen the 75+ dews that occurred further north and west, I bet there would have been a lot more readings in that 78-81 range. Just look at Saginaw, Michigan - two consecutive days above the previous ALL-TIME record high minimum. That's crazy. Can you imagine the masturbatory orgy of posting that would be going on here if places had multiple days in a row below their prior record low high temperatures, in December no less [and not even during the colder January/February period]?!?

We all know that would never happen. Instead, there will be a barrage of posts about how cold it is the next time there's a low temperature 5F above the prior daily record, or an isolated high temperature close to a record low due to an all-day deluge of rain. 

[SACRUS]

22 minutes ago, winterwx21 said:

I just hope our dry July 4th holds, but of course accuracy at this range isn't very good. 

I agree and am tracking in it the other thread

[bluewave]

14 minutes ago, TheClimateChanger said:

Sorry if this comes across as unduly harsh @bluewave. Certainly, appreciate your posts, but we do need to be careful about speaking in absolutes. There were plenty of rural areas that saw similar low temperatures, maybe not along the east coast where dews were lower. However, if the east coast had seen the 75+ dews that occurred further north and west, I bet there would have been a lot more readings in that 78-81 range

No problem. If our area had low temperature extremes like places in Wisconsin, Minnesota, and Vermont in recent years, then we would see lows around 88° in Queens and 83° at HPN and ISP.

We are fortunate that we still haven’t seen a warm season extreme here like the 80° back in February 2018. An equivalent July extreme would be a high of 112° in Queens and around Newark. With low temperatures near 90° in both locations. Under such a scenario even the surrounding more rural areas would reach 105-108° during the day and struggle to fall much below 84° and 85° for a low. 

 

[LibertyBell]

4 hours ago, SACRUS said:

RIght.  If you account for the Park's tendency Jul 2013 was also.  We'll see how strong the heat can get with the next ridge later next month / Aug.

102.6 here, it hit 102+ twice but the clouds keep getting in the way

[LibertyBell]

1 hour ago, bluewave said:

No problem. If our area had low temperature extremes like places in Wisconsin, Minnesota, and Vermont in recent years, then we would see lows around 88° in Queens and 83° at HPN and ISP.

We are fortunate that we still haven’t seen a warm season extreme here like the 80° back in February 2018. An equivalent July extreme would be a high of 112° in Queens and around Newark. With low temperatures near 90° in both locations. Under such a scenario even the surrounding more rural areas would reach 105-108° during the day and struggle to fall much below 84° and 85° for a low. 

 

record highs are much more exciting than record high mins

[JerseyWx]

3 hours ago, Dark Star said:

Just the opposite.  I can't say the the Urban Heat Island effect was responsible for THI values over 100 for such a large area.

No you're missing the point.  The UHI is why it was over 90 degrees after midnight in the city areas, where I was like 77 or so.

[Dark Star]

1 minute ago, JerseyWx said:

No you're missing the point.  The UHI is why it was over 90 degrees after midnight in the city areas, where I was like 77 or so.

I'm in a "suburb" in Union County NJ, and it was near 90 around midnight.  I don't think anyone  on this board has any uncertainties about the urban heat island effect.

[bluewave]

1 hour ago, LibertyBell said:

record highs are much more exciting than record high mins

International Falls getting their earliest 70° minimum by 35 days back in May was probably the most impressive temperature record for the CONUS this year so far at a +33° minimum.

CLIMATE REPORT 
NATIONAL WEATHER SERVICE DULUTH MN
426 PM CDT MON MAY 12 2025

...................................

...THE INTERNATIONAL FALLS CLIMATE SUMMARY FOR MAY 12 2025...
VALID TODAY AS OF 0400 PM LOCAL TIME.

CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1895 TO 2025


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST      
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR     
                                                  NORMAL           
...................................................................
TEMPERATURE (F)                                                          
 TODAY                                                               
  MAXIMUM         90R  2:59 PM  86    1991  63     27       67        
  MINIMUM         70   5:43 AM  18    2020  37     33       40        
  AVERAGE         80                        50     30       54     

[MorristownWx]

Based on trajectory most of the storms look to miss to our south 

[SACRUS]

 

to 99 here now to 94 clouds to the west