ChescoWx

Today will likely be our mildest day for quite a while. We start a cooling trend tomorrow and it looks like our pattern over at least the next several weeks will feature generally below normal temperatures and above normal precipitation. Of note since March 1st we are at about 80% of our normal precipitation. We could pick up a 1/2 to 3/4 of an inch of rain from Friday night through Saturday. Saturday will be a chilly and raw day with winds off the still chilly ocean keeping temperatures not far from the current ocean water temp of around 50 degrees. Temperatures next week look to remain a little cooler than normal with rain chances increasing again by Monday night into Tuesday.

Today will likely be our mildest day for quite a while. We start a cooling trend tomorrow and it looks like our pattern over at least the next several weeks will feature generally below normal temperatures and above normal precipitation. Of note since March 1st we are at about 80% of our normal precipitation. We could pick up a 1/2 to 3/4 of an inch of rain from Friday night through Saturday. Saturday will be a chilly and raw day with winds off the still chilly ocean keeping temperatures not far from the current ocean water temp of around 50 degrees. Temperatures next week look to remain a little cooler than normal with rain chances increasing again by Monday night into Tuesday.

To state it better - The above chart Charlie highlights shows that NCEI has met their objective of taking out actual raw station data to alter the data to hide the cyclical pattern in the raw data. Of course, if you leave in all the station changes you won't match the revised/altered NCEI or any other "scientific" analysis. The above thread and data produced by chescowx consistently uses certified NWS actual data and ensures it is not influenced by bad analysis or exhibits any of the clear confirmation bias that underscores the altered data often used to support climate alarmism.

We had a widespread hard freeze (sub 28 degree) this morning with the latest sub-30-degree temperature I have ever recorded (records back to 2004) here in East Nantmeal with a low of 27.4. In looking back at records for the higher elevation spots (+600 ft ASL) of Chester County this appears to be the latest reading in the 20's in 37 years since the 27-degree reading at Coatesville 2W on April 24, 1989. Both KMQS Coatesville Airport and the Longwood Gardens DEOS station with 18 years of records also recorded their latest sub 30 degree reading this morning. In addition, many of our shorter-term stations with 15 years of records also set a record for latest hard freeze including DEOS stations in Atglen, Devault, Glenmoore, Kennett Square, Warwick, West Chester and West Grove. We stay unseasonable chilly through tomorrow with highs by tomorrow warming to near 60 degrees. We should see above normal temperatures by Thursday before we fall back below normal for the weekend. We have some light shower chances tomorrow morning with a better chance at more significant rains by Saturday.

We had a widespread hard freeze (sub 28 degree) this morning with the latest sub-30-degree temperature I have ever recorded (records back to 2004) here in East Nantmeal with a low of 27.4. In looking back at records for the higher elevation spots (+600 ft ASL) of Chester County this appears to be the latest reading in the 20's in 37 years since the 27-degree reading at Coatesville 2W on April 24, 1989. Both KMQS Coatesville Airport and the Longwood Gardens DEOS station with 18 years of records also recorded their latest sub 30 degree reading this morning. In addition, many of our shorter-term stations with 15 years of records also set a record for latest hard freeze including DEOS stations in Atglen, Devault, Glenmoore, Kennett Square, Warwick, West Chester and West Grove. We stay unseasonable chilly through tomorrow with highs by tomorrow warming to near 60 degrees. We should see above normal temperatures by Thursday before we fall back below normal for the weekend. We have some light shower chances tomorrow morning with a better chance at more significant rains by Saturday.

Ugh! we missed out here in Chesco! So we will close our 2025-26 winter season with 15 winter events!! Actually Birds I am more efficient than you surmised with the entire Chester County data set on 2 cloud servers and an external drive. Spreadsheet wise - even more efficient with only 1 source excel spreadsheet mirrored on Google Sheets for analytics run off of Data Studio (a great analytics program by the way!)

Truth! Only long running climate data works!

Due to multiple requests below for comparison I have added the recast National Centers for Environmental Information (NCEI) temperature data that includes the chilling adjustments to the older data. That chart is now below the actual raw data. I split our weather database almost down the middle to compare how our climate here in Chester County has changed compared to the first 66 years of climate data (1893-1959) vs. the last 67 years of data (1960-2025). With the actual data we see that 7 of our months have trended cooler - 3 have trended warmer and 2 have remained about the same. Overall, on an annual basis the actual raw data has trended cooler by 0.2 degrees during our most recent half of climate data 1960-2025. However, once NCEI applies their adjustments it paints a very different picture. We see clear warming in each and every month during our more recent climate history from 1960-2025. This aligns well with the expected warming narrative.

Well if AI says it's so.....

A Freeze Warning is in effect tonight through 9am tomorrow morning. Be sure to protect any tender plants by late tonight. In my 22 years here the average date of my last freeze has been April 10th. Valley locations across the area have averaged later last freeze dates. High temperatures today will be almost 20 degrees below normal temperatures in the 40's. We start a warming trend through the rest of the work week before chilling down and turning wet for the weekend.

A Freeze Warning is in effect tonight through 9am tomorrow morning. Be sure to protect any tender plants by late tonight. In my 22 years here the average date of my last freeze has been April 10th. Valley locations across the area have averaged later last freeze dates. High temperatures today will be almost 20 degrees below normal temperatures in the 40's. We start a warming trend through the rest of the work week before chilling down and turning wet for the weekend.

I split our weather database almost down the middle to compare how our climate here in Chester County has changed compared to the first 66 years of climate data (1893-1959) vs. the last 67 years of data (1960-2025). Of note 7 months have trended cooler - 3 have trended warmer and 2 have remained about the same. Overall, on an annual basis we have trended cooler by 0.2 degrees during the latest period of record.

I split our weather database almost down the middle to compare how our climate here in Chester County has changed compared to the first 66 years of climate data (1893-1959) vs. the last 67 years of data (1960-2025). Of note 7 months have trended cooler - 3 have trended warmer and 2 have remained about the same. Overall, on an annual basis we have trended cooler by 0.2 degrees during the latest period of record.

I split our weather database almost down the middle to compare how our climate here in Chester County has changed compared to the first 66 years of climate data (1893-1959) vs. the last 67 years of data (1960-2025). Of note 7 months have trended cooler - 3 have trended warmer and 2 have remained about the same. Overall, on an annual basis we have trended cooler by 0.2 degrees during the latest period of record.

The correct answer remains as always - climate change!! LOL!!