ChescoWx

Today was in my book a top 10 day - DP dropped into the 30's this PM with high temps across Chesco including: East Nantmeal VP2 73.4 / EN Ambient 73.4/ EN Tempest 76.3 / /KMQS 75.2 /Elverson 77.8 / Marsh Creek 80.8 / West Brandwine Twp 77.3 and Downingtown 76.7

Low's last night across the County ranged from the chilly upper 40's in the lower spots to the low 50's on the ridges. Today should be a couple degrees cooler but another beautiful day. Record high for today is the 97 degrees back in 1927. Record low was the 39 degrees reading on this date in 1948. Record rain for the day is the 2.39" on this date in 1970.

The Chester County PA weather summary for the recently completed month of May. Our average temperature was 62.5 (+1.7 above normal) This was the 44th warmest May since records began back in 1894. Of note 4 of the 5 warmest month's of May occurred prior to 1944 with the warmest being the 68.5 average temp in May 1944. Our warmest temp was the 88.3 on the 31st - lowest temp was the 39.1 on the 8th. Rainfall totaled 5.06" which is 0.67" above normal. This was the 36th wettest May. The wettest May was the 11.72" that fell way back in 1894.

The record high for today is 95 degrees set way back in 1895. Our record low is the 37 degrees from 1927. Record rainfall is the 3.11" that fell in 1946. We only picked up 0.06" overnight after missing all the rain yesterday.

Still no 90+ days this year in the higher spots of our County as we could do no better than 88.2 yesterday here in East Nantmeal and 89.6 at KMQS Airport in Coatesville. Record High for today is 96.5 way back in 1895. The record coldest was the 34 degrees in 1930. Our record rain for the day is 1.69" from 1977.

Plenty of 90's across the low spots of Chesco with Marsh Creek at lake level already up to 96.5 while Hawk Hill in Downingtown up to 89.1 and 89.6 at KMQS and 90.0 at KPTW. Here in East Nantmeal the roof mounted Tempest has topped out at 90.9 degrees - but both the VP2 at 88.3 and the Ambient station (88.2) have not yet topped the 90 degree mark. Also 1st 90+ day on the barrier islands at the Jersey Shore!

Already up to 88.5 down at Lake Level on Marsh Creek and up to 84.3 here in East Nantmeal and 85.0 on my tempest roof top station....could we actually touch 90 here in Western Chesco for the first time since June 30, 2021?

Records for today - High 94 in 1942 / Low 37 (1961) record rainfall 2.12" (1971)

Think you may need to check your siting or thermometer...no spots across all of PA with the exception of the PHL airport heat islands even got to 82 degrees....

Wow what a difference across most of Chester County with some elevation ...East Nantmeal could do no better than 76.1 and KMQS Chester County Airport only made it to 77.0....you are in a very warm spot...assuming a low elevation in the Reading PA area

Beautiful day down the shore in Sea Isle City NJ. Nice breeze off the chilly 62 degree surf temp

Our record high Chester County temperature today is the 92 degrees on this date back in 1969. The record low is 35 degrees set back in 1949. Record daily rainfall was the 3.05" that fell back in 1990.

We received a total of 0.61" of rain with the storms yesterday and overnight. Our record high temperature for today is 94 degrees set back in 1941. The record low was also the latest freezing temperature in Western Chesco history at 32 degrees this day back in 1927.

The record high today is 92 degrees from 1991. Record low 38 degrees in 1926. Daily rainfall record is the 1.92" from 1952.

No measurable rain overnight. The record high for today is 91 degrees set in 1964. Our record low is the 30 degree reading today in 1956. Of note that would be the 2nd latest freezing temperature ever recorded in Western Chester County. The latest freezing temp occurred on May 28, 1927 when the low was 32 degrees.

You are the best!! I will be diving in to this data....the weenie that I am!! Thanks again!! Paul

Our record high today is 95 degrees from 1941 - record low temp is the 34 degree today in 1963. Record rainfall is 2.59" from 1915.

With the exception of Mount Pocono....almost all spots reached or exceeded 90 degrees today. Of course to no surprise here in East Nantmeal we could NOT reach the 90 degree mark....with the exception of my Tempest weather station which is mounted on my roof (which did reach 90.7 degrees). However my Vantage Pro 2 (which I use for my "official" reports - mounted 5 feet above the ground and my Ambient Weather station also mounted 5 feet above ground level reached 88.1 and 88.0 respectively - I see nearby Bucktown also could do no better than 88.5. No doubt many spots under 600 feet across Chester County reached the 90 degree mark. The Chester County Airport (KMQS) almost exceeded...but topped out at 89.6.

Wow!! this is excellent information that I have never seen!! It appears he was submitting obs back to February 1888! The earliest obs I can find from him are those from January 1894. Will have to do some digging to see if anyway to unearth those additional years! To have tracked daily data for 42 years is mighty impressive. Maybe I can reach that number of years if I am still around!! Thanks for the most excellent research!!! Paul

Can we touch 90 here in NW Chesco? My VP is at 86.0 - the rooftop Tempest is at 88.0 and my Ambient station is at 85.3

I kind of miss our obsessive friend from the valley!! Thanks for sharing!!

Would love to know more about him and the guy that followed him Howard Pyle....let me know! Thanks! Paul

Of note we have not had a 90+ day in May since May 3, 2018. In that year we ended with 4 days above 90 that summer. The last time we had earlier 90+ temps (April/May) was on April 26 and 27, 2009. In that summer we never again saw a 90+ day as those 2 were the only times we were able to crack 90 that year and 1 day was 89.5. Before that our last 90 in May was on May 4, 2001.

The NWS has a forecast high today of 92 degrees...WXSIM says 88 here along the peaks of the Welsh Mountain. The record high for today is the 95 degree reading back in 1934. Our record low is 34 from 2002. Record rainfall is 3.55" in 1894 for a 2 day total of 8.44" of rain- Below I have attached the handwritten observations of that very rainy stretch from the Coatesville Weather observer WT Gordon from May 1894.

Our record high for the day today is 94 degrees from 1996. The record low is 35 from 2002. Record daily rainfall is the 4.89" deluge that fell today way back in 1894.