May 2025

[FPizz]

Pretty close to a record low High Temp today in some spots I believe. NYC is 54.

[SACRUS]

 

54 / 51 clouds.  Cool / wet stretch the next 72 hours.  Rain later and heavy rain Thursday with coastal as trough cuts off and ULL slowly moves through and northeast this weekend.   1.5 to 3.00 inches of rain in the heaviest spots northeast.  Saturday to slowly clear out but with upper level low still over to the north some isolated showers and and stingy clouds could get in the way espeically eastern areas. 

Sun and Mon to look to clear out and get back to normal.  Trough still into the northeast through much of next week with next chance for showers and rain 5/28 - 5/30.   

Warmth and heat on the move north and east out of the west and a much warmer start to next month and the chance for tracking some heat.   May see the trough back west and ridge setup along the EC / WC.

 

On to the clouds

 

 

[SACRUS]

 

Records:

Highs:

EWR: 96 (1996)
NYC: 93 (1996)
LGA: 93 (1996)
JFK: 90 (1996)

 

 

Lows:

EWR: 42 (2002)
NYC: 40 (1907)
LGA: 45 (2002)
JFK: 42 (2020)^

 

Historical:

 

1860 - A swarm of tornadoes occurred in the Ohio Valley. Tornadoes struck the cities of Louisville, KY, Cincinnati, OH, Chillicothe, OH, and Marietta, OH, causing a million dollars damage. (David Ludlum)

 

1881: Clara Barton and a circle of close friends found the American Red Cross. 

1895 - The temperature at Norwalk, OH, dipped to 19 degrees to set a state record for the month of May. (The Weather Channel)

1896 - The mercury soared to 124 degrees at Salton, CA, to establish a U.S. record for May. (Sandra and TI Richard Sanders - 1987)

 

1949: A violent tornado crossed the Mississippi River from the St. Louis area into Wood River, then to Roxanna. This tornado damaged or destroyed 300 homes in these two towns, killing five people. Four people died in a destroyed restaurant in Palestine, Illinois; one body was recovered from a tree. A tornado causing estimated F4 damage killed five people and injured 55 in St. Louis and St. Charles counties in Missouri and Madison County in Illinois. This tornado was part of an outbreak that produced four different tornadoes and was responsible for five deaths and 57 injuries.

 

1973: An intense electrical storm that moved through Tecumseh, OK which resulted in lightning "fire balls ", running along the city's power lines. Only brief power outages and minor damage were reported, except for an abandoned home that burned down after being struck by the lightning.

1980 - The temperature at Williston ND reached 102 degrees to set a record for May, and the next day the mercury hit 106 degrees. (The Weather Channel)

1987 - Severe thunderstorms, developing along a sharp cold front crossing the central U.S., produced 60 mph winds and golf ball size hail at Sedalia, MO, and drenched Hagerstown, IN, with six inches of rain in one hour. Temperatures soared into the 90s ahead of the cold front. Paducah, KY, hit 94 degrees for the second day in a row. Light snow blanketed Montana, with three inches reported at Butte. (The National Weather Summary) (Storm Data)

1988 - Severe thunderstorms swept across southern Louisiana during the morning hours spawning six tornadoes, and producing wind gusts to 88 mph at Jennings. Thunderstorms also produced five inches of rain in two hours at Lake Charles, causing local flooding. (The National Weather Summary) (Storm Data)

1989 - Thunderstorms moving southeastward across the Central Plains Region into Oklahoma and Arkansas produced severe weather through the day and night. Thunderstorms spawned just four tornadoes, but there were 243 reports of large hail and damaging winds. Baseball size hail was reported at Augusta, KS, and thunderstorm winds gusted to 98 mph at Johnson, KS. (The National Weather Summary) (Storm Data)

1990 - Thunderstorms produced severe weather across the southeastern U.S. for the second day in a row. Severe thunderstorms spawned five tornadoes, including one which injured a person at Richmond KY. There were eighty-seven reports of large hail or damaging winds, with hail three inches in diameter reported at Austin TX. Thunderstorms produced up to five inches of rain in Macon County GA, and heavy rains left nearly eight feet of water over roads near Stepstone KY. (The National Weather Summary) (Storm Data)

 

1992: Canadian high pressure across the Mid-Atlantic brought record low temperatures to parts of the East. The morning low of 28° degrees in Atlantic City, NJ was the coldest ever for so late in season. Locations that reported daily record lows for the date included: Martinsburg, WV: 35°, Salisbury, MD: 36°, Baltimore, MD: 38°, Dover, DE: 41°, Wilmington, DE: 41°, Washington, D.C.: 43 °F.

 

2001: Golfers participating in a golf tournament at the Majestic Golf Course in Hartland, Michigan received an urgent message on the G.P.S. on their carts. The message, relayed from the clubhouse, was that a tornado was bearing down on the course. Most of the golfers made it to safety in the clubhouse, although some had to take shelter on the course. Only one golfer suffered a minor injury. The F2 tornado damaged 70 cars in the parking lot along with numerous golf carts and a pontoon boat.

 

[SACRUS]

 

Cool period

 

EWR:

5/19: 73 / 52 (-1)
5/20: 71/50 (-3)

NYC:

5/19: 69 /51 (-4)
5/20: 67 / 49 (-6)

LGA:

5/19:  70 / 52 (-4)
5/20: 68 / 50 (-6)

JFK:

5/19: 74 / 53 (+3)
5/20: 76 / 50 (+1)

[donsutherland1]

3 hours ago, qg_omega said:

What a change in the monthly outlook from two weeks ago

Based on sensitivity analysis applied to the latest guidance, there is an implied near 78% probability that New York City will have a warmer than normal May (1991-2020 normal). May will likely finish with a mean temperature near 66.0° (2.8° above normal). That would tie 2025 with 1986 as the 9th warmest May on record.

Based on sensitivity analysis applied to the latest guidance, there is an implied near 53% probability that New York City will have a cooler than normal May (1991-2020 normal). May will likely finish with a mean temperature near 63.1° (0.1° below normal).

It was. The dramatic shift reveals the limits of the guidance beyond 10-14 days. Dramatic changes can and do occur. This time around, at least for the NYC area, the AI estimate will blow the modeling out of the water.

[SACRUS]

 

Most of this is between Today and Sat AM it does has 0/10 - 0.15 for Tue/Wed next week

 

[bluewave]

This end of May cool down has become a repeating feature over the last 10-15 years. 

[SACRUS]

 

Rain has begun.  Timing again with rain looks to salvage the weekend, albeit it'll be very cool Saturday. A week ago the timing was more Thu- Sat and at one point looked to be the 3 day weekend.

 

[SACRUS]

A cool March (i mean May) 21

 

[Sundog]

2 hours ago, lee59 said:

Yesterdays highs on Long Island

Islip                67

Farmingdale  66

LaGaurdia      68

Kennedy          76

Not possible. if you look ata the 5 minute rapid refresh for JFK, there is a gap in the data. I highly doubt the temp jumped 7 degrees from the previous recorded temp on this list and then quickly dropped back down to the 60s. It must be an error:

[bluewave]

Probably the last higher elevation snow potential for the season.

 

[Sundog]

Juno Jr. on the Euro:

[Brian5671]

1 minute ago, Sundog said:

Juno Jr. on the Euro:

Euro definitely the furthest west with the low

[jm1220]

1 minute ago, Brian5671 said:

Euro definitely the furthest west with the low

4 months too late.  

Congrats to the 2500ft+ mountain tippy tops in VT/NH. 

[nycwinter]

what a miserable cold rainy morning it is cold enough to wear a winter coat..

[Stormlover74]

2 minutes ago, nycwinter said:

what a miserable cold rainy morning it is cold enough to wear a winter coat..

I thought this was your favorite weather? You and Metfan should be skipping through the puddles 

[Dark Star]

2 hours ago, donsutherland1 said:

It was. The dramatic shift reveals the limits of the guidance beyond 10-14 days. Dramatic changes can and do occur. This time around, at least for the NYC area, the AI estimate will blow the modeling out of the water.

Sort of hard to believe that we don't have confidence at least in "trends" of temperature more than 10 days out in the year 2025.  Then again, I'm surprised at a lot of things in 2025...

[lee59]

2 hours ago, Sundog said:

Not possible. if you look ata the 5 minute rapid refresh for JFK, there is a gap in the data. I highly doubt the temp jumped 7 degrees from the previous recorded temp on this list and then quickly dropped back down to the 60s. It must be an error:

It does seem like an error, have to check back to see if it changes.

[Brian5671]

Breezy and chilly here 52, dry air winning the battle for now

[jm1220]

6 minutes ago, Brian5671 said:

Breezy and chilly here 52, dry air winning the battle for now

Confluence/dry air from the east trying to hold it off although this time of course in late May it’ll lose. 

[Santa Claus]

gorgeous outside

[LibertyBell]

5 hours ago, lee59 said:

Yesterdays highs on Long Island

Islip                67

Farmingdale  66

LaGaurdia      68

Kennedy          76

Yes it was nice and warm here around 3 pm

70 .... not 76 lol

[LibertyBell]

2 hours ago, jm1220 said:

4 months too late.  

Congrats to the 2500ft+ mountain tippy tops in VT/NH. 

No, it would have been raining here in January too, this is an inside runner.

[LibertyBell]

2 hours ago, Sundog said:

Juno Jr. on the Euro:

an inside runner, would be mostly rain here

[LibertyBell]

3 hours ago, Sundog said:

Not possible. if you look ata the 5 minute rapid refresh for JFK, there is a gap in the data. I highly doubt the temp jumped 7 degrees from the previous recorded temp on this list and then quickly dropped back down to the 60s. It must be an error:

the high was 70 here

[LibertyBell]

3 hours ago, bluewave said:

This end of May cool down has become a repeating feature over the last 10-15 years. 

Yes so I wasn't joking when I said our Mays have become cooler.

 

[LibertyBell]

4 hours ago, SACRUS said:

 

Records:

Highs:

EWR: 96 (1996)
NYC: 93 (1996)
LGA: 93 (1996)
JFK: 90 (1996)

 

 

Lows:

EWR: 42 (2002)
NYC: 40 (1907)
LGA: 45 (2002)
JFK: 42 (2020)^

 

Historical:

 

1860 - A swarm of tornadoes occurred in the Ohio Valley. Tornadoes struck the cities of Louisville, KY, Cincinnati, OH, Chillicothe, OH, and Marietta, OH, causing a million dollars damage. (David Ludlum)

 

1881: Clara Barton and a circle of close friends found the American Red Cross. 

1895 - The temperature at Norwalk, OH, dipped to 19 degrees to set a state record for the month of May. (The Weather Channel)

1896 - The mercury soared to 124 degrees at Salton, CA, to establish a U.S. record for May. (Sandra and TI Richard Sanders - 1987)

 

1949: A violent tornado crossed the Mississippi River from the St. Louis area into Wood River, then to Roxanna. This tornado damaged or destroyed 300 homes in these two towns, killing five people. Four people died in a destroyed restaurant in Palestine, Illinois; one body was recovered from a tree. A tornado causing estimated F4 damage killed five people and injured 55 in St. Louis and St. Charles counties in Missouri and Madison County in Illinois. This tornado was part of an outbreak that produced four different tornadoes and was responsible for five deaths and 57 injuries.

 

1973: An intense electrical storm that moved through Tecumseh, OK which resulted in lightning "fire balls ", running along the city's power lines. Only brief power outages and minor damage were reported, except for an abandoned home that burned down after being struck by the lightning.

1980 - The temperature at Williston ND reached 102 degrees to set a record for May, and the next day the mercury hit 106 degrees. (The Weather Channel)

1987 - Severe thunderstorms, developing along a sharp cold front crossing the central U.S., produced 60 mph winds and golf ball size hail at Sedalia, MO, and drenched Hagerstown, IN, with six inches of rain in one hour. Temperatures soared into the 90s ahead of the cold front. Paducah, KY, hit 94 degrees for the second day in a row. Light snow blanketed Montana, with three inches reported at Butte. (The National Weather Summary) (Storm Data)

1988 - Severe thunderstorms swept across southern Louisiana during the morning hours spawning six tornadoes, and producing wind gusts to 88 mph at Jennings. Thunderstorms also produced five inches of rain in two hours at Lake Charles, causing local flooding. (The National Weather Summary) (Storm Data)

1989 - Thunderstorms moving southeastward across the Central Plains Region into Oklahoma and Arkansas produced severe weather through the day and night. Thunderstorms spawned just four tornadoes, but there were 243 reports of large hail and damaging winds. Baseball size hail was reported at Augusta, KS, and thunderstorm winds gusted to 98 mph at Johnson, KS. (The National Weather Summary) (Storm Data)

1990 - Thunderstorms produced severe weather across the southeastern U.S. for the second day in a row. Severe thunderstorms spawned five tornadoes, including one which injured a person at Richmond KY. There were eighty-seven reports of large hail or damaging winds, with hail three inches in diameter reported at Austin TX. Thunderstorms produced up to five inches of rain in Macon County GA, and heavy rains left nearly eight feet of water over roads near Stepstone KY. (The National Weather Summary) (Storm Data)

 

1992: Canadian high pressure across the Mid-Atlantic brought record low temperatures to parts of the East. The morning low of 28° degrees in Atlantic City, NJ was the coldest ever for so late in season. Locations that reported daily record lows for the date included: Martinsburg, WV: 35°, Salisbury, MD: 36°, Baltimore, MD: 38°, Dover, DE: 41°, Wilmington, DE: 41°, Washington, D.C.: 43 °F.

 

2001: Golfers participating in a golf tournament at the Majestic Golf Course in Hartland, Michigan received an urgent message on the G.P.S. on their carts. The message, relayed from the clubhouse, was that a tornado was bearing down on the course. Most of the golfers made it to safety in the clubhouse, although some had to take shelter on the course. Only one golfer suffered a minor injury. The F2 tornado damaged 70 cars in the parking lot along with numerous golf carts and a pontoon boat.

 

1992: Canadian high pressure across the Mid-Atlantic brought record low temperatures to parts of the East. The morning low of 28° degrees in Atlantic City, NJ was the coldest ever for so late in season. Locations that reported daily record lows for the date included: Martinsburg, WV: 35°, Salisbury, MD: 36°, Baltimore, MD: 38°, Dover, DE: 41°, Wilmington, DE: 41°, Washington, D.C.: 43 °F.

I remember this!  1992 was the year without a summer because of Pinatubo.

 

[LibertyBell]

4 hours ago, SACRUS said:

 

Records:

Highs:

EWR: 96 (1996)
NYC: 93 (1996)
LGA: 93 (1996)
JFK: 90 (1996)

 

 

Lows:

EWR: 42 (2002)
NYC: 40 (1907)
LGA: 45 (2002)
JFK: 42 (2020)^

 

Historical:

 

1860 - A swarm of tornadoes occurred in the Ohio Valley. Tornadoes struck the cities of Louisville, KY, Cincinnati, OH, Chillicothe, OH, and Marietta, OH, causing a million dollars damage. (David Ludlum)

 

1881: Clara Barton and a circle of close friends found the American Red Cross. 

1895 - The temperature at Norwalk, OH, dipped to 19 degrees to set a state record for the month of May. (The Weather Channel)

1896 - The mercury soared to 124 degrees at Salton, CA, to establish a U.S. record for May. (Sandra and TI Richard Sanders - 1987)

 

1949: A violent tornado crossed the Mississippi River from the St. Louis area into Wood River, then to Roxanna. This tornado damaged or destroyed 300 homes in these two towns, killing five people. Four people died in a destroyed restaurant in Palestine, Illinois; one body was recovered from a tree. A tornado causing estimated F4 damage killed five people and injured 55 in St. Louis and St. Charles counties in Missouri and Madison County in Illinois. This tornado was part of an outbreak that produced four different tornadoes and was responsible for five deaths and 57 injuries.

 

1973: An intense electrical storm that moved through Tecumseh, OK which resulted in lightning "fire balls ", running along the city's power lines. Only brief power outages and minor damage were reported, except for an abandoned home that burned down after being struck by the lightning.

1980 - The temperature at Williston ND reached 102 degrees to set a record for May, and the next day the mercury hit 106 degrees. (The Weather Channel)

1987 - Severe thunderstorms, developing along a sharp cold front crossing the central U.S., produced 60 mph winds and golf ball size hail at Sedalia, MO, and drenched Hagerstown, IN, with six inches of rain in one hour. Temperatures soared into the 90s ahead of the cold front. Paducah, KY, hit 94 degrees for the second day in a row. Light snow blanketed Montana, with three inches reported at Butte. (The National Weather Summary) (Storm Data)

1988 - Severe thunderstorms swept across southern Louisiana during the morning hours spawning six tornadoes, and producing wind gusts to 88 mph at Jennings. Thunderstorms also produced five inches of rain in two hours at Lake Charles, causing local flooding. (The National Weather Summary) (Storm Data)

1989 - Thunderstorms moving southeastward across the Central Plains Region into Oklahoma and Arkansas produced severe weather through the day and night. Thunderstorms spawned just four tornadoes, but there were 243 reports of large hail and damaging winds. Baseball size hail was reported at Augusta, KS, and thunderstorm winds gusted to 98 mph at Johnson, KS. (The National Weather Summary) (Storm Data)

1990 - Thunderstorms produced severe weather across the southeastern U.S. for the second day in a row. Severe thunderstorms spawned five tornadoes, including one which injured a person at Richmond KY. There were eighty-seven reports of large hail or damaging winds, with hail three inches in diameter reported at Austin TX. Thunderstorms produced up to five inches of rain in Macon County GA, and heavy rains left nearly eight feet of water over roads near Stepstone KY. (The National Weather Summary) (Storm Data)

 

1992: Canadian high pressure across the Mid-Atlantic brought record low temperatures to parts of the East. The morning low of 28° degrees in Atlantic City, NJ was the coldest ever for so late in season. Locations that reported daily record lows for the date included: Martinsburg, WV: 35°, Salisbury, MD: 36°, Baltimore, MD: 38°, Dover, DE: 41°, Wilmington, DE: 41°, Washington, D.C.: 43 °F.

 

2001: Golfers participating in a golf tournament at the Majestic Golf Course in Hartland, Michigan received an urgent message on the G.P.S. on their carts. The message, relayed from the clubhouse, was that a tornado was bearing down on the course. Most of the golfers made it to safety in the clubhouse, although some had to take shelter on the course. Only one golfer suffered a minor injury. The F2 tornado damaged 70 cars in the parking lot along with numerous golf carts and a pontoon boat.

 

Lows:

EWR: 42 (2002)
NYC: 40 (1907)
LGA: 45 (2002)
JFK: 42 (2020)^

 

wow, 2020 was still cold this late in May?

 

[LibertyBell]

13 hours ago, donsutherland1 said:

I think there’s pretty good agreement about upper 70s/low 80s to end May or start June. The GFS appears to be greatly overdone with the heat.

But real heat coming in to start June?

[LibertyBell]

15 hours ago, SRRTA22 said:

I'm definitely in shape lol I fucking hate anything above 85 , if it's dry and breezy it's awesome but stagnant hot city air is terrible 

yes I mean hot and dry with a good westerly breeze, humidity is awful and contributes zippo to high temperatures (it even lowers temperatures).