ChescoWx

Below is the May Climate Summary for Chester County PA. We finished with a below average temperature of 61.5 our 30 year average May temperature is 61.9 degrees. This was the 61st chilliest May with 132 years of records. It was a very wet month with an average rainfall across the county of 7.70" this is the 4th highest average county rainfall since records began in 1894. The climate summary is detailed below with the warmest temperature at Phoenixville on May 2nd and the coldest at Warwick Township on May 20th.

Our first 2 days of June have featured temperatures almost 10 degrees below normal levels for the start of June. The good news is this should turn around starting today with temperatures reaching 80 degrees in some of the lower elevation spots across the area. By tomorrow through the rest of the work week we should all see temperatures in the low to mid 80's. Sunny skies most of the week before rain chances increase by Friday night into Saturday. We clear up but turn a bit cooler by Sunday.

Our first 2 days of June have featured temperatures almost 10 degrees below normal levels for the start of June. The good news is this should turn around starting today with temperatures reaching 80 degrees in some of the lower elevation spots across the area. By tomorrow through the rest of the work week we should all see temperatures in the low to mid 80's. Sunny skies most of the week before rain chances increase by Friday night into Saturday. We clear up but turn a bit cooler by Sunday.

We had our 2nd straight morning with low temperatures in the 40's across much of the area. This is the first time since 2017 that we have seen back-to-back days with lows that chilly. Today will be our 15th below normal day over the last 16 days. The good news is we will finally warm back to normal tomorrow and then we will move several degrees above normal by Wednesday. The warmest day of the week should be Thursday with highs in the mid 80's across most of the Western Philly burbs. The Philly heat island should see their 1st 90+ day this week. Our next shower chances look to be by Friday PM into Saturday.

We had our 2nd straight morning with low temperatures in the 40's across much of the area. This is the first time since 2017 that we have seen back-to-back days with lows that chilly. Today will be our 15th below normal day over the last 16 days. The good news is we will finally warm back to normal tomorrow and then we will move several degrees above normal by Wednesday. The warmest day of the week should be Thursday with highs in the mid 80's across most of the Western Philly burbs. The Philly heat island should see their 1st 90+ day this week. Our next shower chances look to be by Friday PM into Saturday.

All time June Climate Records for Chester and SE Berks Counties.

All time June Climate Records for Chester and SE Berks Counties.

The "man made" adjusted chilled data is in red.....the actual raw data is in blue. The below is documented proof that man does impact our climate.

See answers above

Well we finished May with below normal temperatures for the 4th month out of the last 6 months....and looking ahead June may also end up cooler than normal especially across the LSV

Well we finished May with below normal temperatures for the 4th month out of the last 6 months....and looking ahead June may also end up cooler than normal.

you sound.....nice. Facts over feelings that is all I present.

If not for the ghost data there is no warming to be found...52 of 53 years of fake chill applied to the raw/actual readings that is the only way you can find signs of local warming in Chester County.

The extremists and climate myth believers are no doubt...displeased with the rising tide of folks who now have come to realization that climate change is of course a nothing burger.

Plenty of reactions on social media to my Ghost Data post...

@chubbssays "We have reviewed the raw data from those 3 stations over and over again. Coatesville and West Chester moved from towns to less built up locations and cooled by 2F. While Phoenixville ran much warmer than surrounding stations in the 1930s, 1940s and 1950s due to higher afternoon temperatures and time of day bias" You never answer the question if Coatesville and West Chester cooled with moves....why did NCEI cool those stations and the county to levels below any of those 3 raw station data?

Below is the now infamous GHOST YEARS of our long Chester County PA Climate History. The chilling chart below highlights those murky 53 years of climate records from 1895 through 1947. The National Center for Environmental Information (NCEI) has in a spooky 52 of those 53 years chillingly changed our historical climate records. But what makes this especially frightening is they did not use any actual living trained National Weather Service cooperative data records for any of those years. Instead they identified a surrogate Ghost Station whose soulless resident data ended up reporting data as the coldest place in Chester County. Somehow each and every year this station reported colder average annual temperatures compared to up to six (6) actual real reporting climate stations across Chester County in all those many years. Where did this Ghostly data come from? Why was it always colder at this station than at any real station? Don't be scared - the truth is out there!! Credit to Professional Meteorologist John Shewchuk for his continuing work at identifying current ghost stations that still report data!

Meteorologist Chris Martz making headlines as a source for debunking many climate myths pushed by alarmists and extremists! Great to see the press starting to come around!!! https://nypost.com/2025/05/31/us-news/meet-the-anti-greta-thunberg-weather-nerd-debunking-climate-myths-and-skewering-the-extremist-elder-statesmen/?utm_source=twitter&utm_campaign=nypost&utm_medium=social

I will take this over to the Chester County specific climate thread going forward. Below is the now infamous GHOST YEARS of our long Chester County PA Climate History. The chilling chart below highlights those murky 53 years of climate records from 1895 through 1947. The National Center for Environmental Information (NCEI) has in a spooky 52 of those 53 years chillingly changed our historical climate records. But what makes this especially frightening is they did not use any actual living trained National Weather Service cooperative data records for any of those years. Instead they identified a surrogate Ghost Station whose soulless resident data ended up reporting data as the coldest place in Chester County. Somehow each and every year this station reported colder average annual temperatures compared to up to six (6) actual real reporting climate stations across Chester County in all those many years. Where did this Ghostly data come from? Why was it always colder at this station than at any real station? Don't be scared - the truth is out there!! Credit to Professional Meteorologist John Shewchuk for his continuing work at identifying current ghost stations that still report data!

Moving this over here! Below is the now infamous GHOST YEARS of our long Chester County PA Climate History. The chilling chart below highlights those murky 53 years of climate records from 1895 through 1947. The National Center for Environmental Information (NCEI) has in a spooky 52 of those 53 years chillingly changed our historical climate records. But what makes this especially frightening is they did not use any actual living trained National Weather Service cooperative data records for any of those years. Instead they identified a surrogate Ghost Station whose soulless resident data was reported as strangely the coldest place in Chester County. Somehow each and every year this station managed to report colder average annual temperatures than up to six (6) actual real reporting climate stations across Chester County in 52 of those 53 years. Where did all of this Ghostly data come from? Why was it always colder at this station than at any real station? Don't be scared - the truth is out there!! Credit to Professional Meteorologist John Shewchuk for his continuing work at identifying current ghost stations that still report data!

Charlie above attempts to alter even further the official NWS data. He chooses to not include many other valid NWS observation sites in his chart above...plus his explanation as always ignores the continued non stop chilling of the data for another 30 years from 1969 thru 1999. Let's once again show the factual actual raw non-altered real National Weather Service data for Chester County PA from 1893 thru 2024. Guess what we see? Clearly, without the spurious altered data shown in red - almost flat annual temperature trends across the NWS Chester County stations. Facts (blue raw) over fiction (red altered)as always wins!

It looks like rainfall across the area ranged from as little as 0.48" at Atglen to as much as 1.51" at Devault. One more round of showers may cross the area late this afternoon and early evening with a strong cold front. We finally clear up tomorrow and begin a stretch of our best weather so far this spring. Most spots except the higher ridges should reach 80 degrees by Tuesday with low to mid 80's for all by Thursday.

It looks like rainfall across the area ranged from as little as 0.48" at Atglen to as much as 1.51" at Devault. One more round of showers may cross the area late this afternoon and early evening with a strong cold front. We finally clear up tomorrow and begin a stretch of our best weather so far this spring. Most spots except the higher ridges should reach 80 degrees by Tuesday with low to mid 80's for all by Thursday.

Of course there is.... note that red line that is the altered data! Blue flat - alternative fact data Red!!

Some sun today with temperatures finally near normal in the mid 70's for the end of May. Heavy Rain tonight into tomorrow with as much as 2 to 3 inches possible in some locations. The wet and chilly pattern looks to finally break starting Sunday and into next week with temperatures by Wednesday in the low 80's.