ChescoWx

There are some who believe our nightime lows are getting warmer during the summer months. The actual data sees no such warming - almost flat since 1893!

Wonder what is going on at KRDG since 2021?? Further north higher elevation than Phoenixville but now warmer than the Chesco warm spot.

I love when climate zealots simply eliminate stations they deem absurd....LOL!

Temperatures today will be close to average for the date with highs well into the 70's to near 80 degrees. We start a warming trend tomorrow with the peak hot day being on Friday which is the only day that higher elevations have a shot a 90 degrees. Most valley spots should reach the 90's Thursday and Friday including higher humidity. While we will cool by a few degrees over the weekend it will remain hot until Monday when temperatures will fall back toward the middle 80's. We have shower chances tomorrow morning and again both Thursday and Friday afternoon.

Temperatures today will be close to average for the date with highs well into the 70's to near 80 degrees. We start a warming trend tomorrow with the peak hot day being on Friday which is the only day that higher elevations have a shot a 90 degrees. Most valley spots should reach the 90's Thursday and Friday including higher humidity. While we will cool by a few degrees over the weekend it will remain hot until Monday when temperatures will fall back toward the middle 80's. We have shower chances tomorrow morning and again both Thursday and Friday afternoon.

Many of our valley locations saw lows well down into the 50's with the coolest being the 53.6 at Warwick Township. We start the week with near normal temperatures and low humidity but by Thursday many spots will be in the low 90's with increasing humidity. We look to stay hot through the weekend, but it looks to be short lived with cooler temperatures arriving next week. Our best rain chance will be Wednesday afternoon into the evening.

Many of our valley locations saw lows well down into the 50's with the coolest being the 53.6 at Warwick Township. We start the week with near normal temperatures and low humidity but by Thursday many spots will be in the low 90's with increasing humidity. We look to stay hot through the weekend, but it looks to be short lived with cooler temperatures arriving next week. Our best rain chance will be Wednesday afternoon into the evening.

Temperatures similar to yesterday with highs in the low to mid 80's. We turn a couple of degrees cooler tomorrow. We then start a warming trend with some spots touching 90 degrees on both Thursday and Friday. There will be some chances at a shower by Thursday night.

Temperatures similar to yesterday with highs in the low to mid 80's. We turn a couple of degrees cooler tomorrow. We then start a warming trend with some spots touching 90 degrees on both Thursday and Friday. There will be some chances at a shower by Thursday night.

Today the PHL Airport looks to record a "heat wave" with their 3rd straight 90+ day. Here in Chesco most spots have not hit 90 degrees over the last few weeks, but we should see many spots do so today. There is a chance of some thunderstorms later this evening that would be welcomed as we continue to run dry across the region. A few degrees cooler tomorrow and several degrees cooler than that on Monday. We start another warming trend on Tuesday and could reach close to 90 degrees again by Thursday.

Today the PHL Airport looks to record a "heat wave" with their 3rd straight 90+ day. Here in Chesco most spots have not hit 90 degrees over the last few weeks, but we should see many spots do so today. There is a chance of some thunderstorms later this evening that would be welcomed as we continue to run dry across the region. A few degrees cooler tomorrow and several degrees cooler than that on Monday. We start another warming trend on Tuesday and could reach close to 90 degrees again by Thursday.

Below is the Chester County PA area daily climate records for June since 1893. Also below is the June warmest high temperatures by state. Of note 32 states set their June record highs before 1960 this is similar to here in Chester County where 26 of our 30 June daily record highs all occurred prior to 1960.

Through May this has been our coldest start to a year since 2015. We should finally see some above normal temperatures starting tomorrow and peaking at around 90 degrees by Saturday. We then see some increasing chances of showers by Saturday night with temperatures cooling back to near normal levels by next Monday.

Through May this has been our coldest start to a year since 2015. We should finally see some above normal temperatures starting tomorrow and peaking at around 90 degrees by Saturday. We then see some increasing chances of showers by Saturday night with temperatures cooling back to near normal levels by next Monday.

Of note Spring of 2026 was the 14th warmest Spring since 1893 - conversely Winter 2025-26 was our 14th coldest! Our weather does have a way of balancing out! Below is our Spring Temperature trends since 1893....only some slight warming evidenced by the data.

Since 1893 we have seen a cooling trend during the month of May here in Chester County PA

Of note here in the philly burbs of Chester County PA Spring of 2026 was the 14th warmest Spring since 1893 - conversely Winter 2025-26 was our 14th coldest! Our weather does have a way of balancing out! Below is our Spring Temperature trends since 1893....only some slight warming is shown.

Of note here in the philly burbs of Chester County PA Spring of 2026 was the 14th warmest Spring since 1893 - conversely Winter 2025-26 was our 14th coldest! Our weather does have a way of balancing out! Below is our Spring Temperature trends since 1893....only some slight warming is shown.

Since 1893 we have seen a cooling trend during the month of May

Since 1893 we have seen a cooling trend during the month of May

Below is the May 2026 Chester County Climate Summary. We finished May with an average temperature of 60.8 degrees across all stations. This was 0.7 degrees below the 1991-2020 average May temperature of 61.5 degrees. This was the 56th coldest May in 134 years of records back to 1893.

Below is the May 2026 Chester County Climate Summary. We finished May with an average temperature of 60.8 degrees across all stations. This was 0.7 degrees below the 1991-2020 average May temperature of 61.5 degrees. This was the 56th coldest May in 134 years of records back to 1893.

Today will be the 11th of the last 13 days with below normal temperatures. Sunny and dry through Saturday. We should finally see some warmer than average temperatures by the end of the week and into the weekend. Rain chances look to increase by Sunday.

Today will be the 11th of the last 13 days with below normal temperatures. Sunny and dry through Saturday. We should finally see some warmer than average temperatures by the end of the week and into the weekend. Rain chances look to increase by Sunday.

I am compiling the final averages but it looks like Chester County will finish around a 1 degree below the 1991-2020 average for the Month of May