ChescoWx

And only 18% before 1955....interesting...not really cyclical climate in action!! LOL!!

Climate factoid of the day. Someone posted last week that it seems like it never snows before Christmas here in Chester County. So, I went back and looked to see how often we have not recorded any measurable snow by Christmas Day. The data shows we actually have seen measurable snow 92% of the time before Christmas. There have only been 11 years across 132 years of record that no station in the county recorded measurable (more than a trace) of snow. Those years were 1899 / 1918/ 1956 / 1965 / 1974 / 1991 / 1999 / 2001 / 2006 / 2015 and 2021.

Climate factoid of the day. Someone posted last week that it seems like it never snows before Christmas here in Chester County. So, I went back and looked to see how often we have not recorded any measurable snow by Christmas Day. The data shows we actually have seen measurable snow 92% of the time before Christmas. There have only been 11 years across 132 years of record that no station in the county recorded measurable (more than a trace) of snow. Those years were 1899 / 1918/ 1956 / 1965 / 1974 / 1991 / 1999 / 2001 / 2006 / 2015 and 2021.

I have continued to update the Chester County Weather website and have now completed and added a listing of the largest Chester County snowstorms across the 7 months of the year - October through April that we have recorded snow events. https://chescowx.com/top-snowfalls-by-month/ this includes the 2nd largest snowstorm in County history that occurred in March 1958 when between 19" to as much as 50" of snow fell across Chester and SE Berks Counties. See below.

I have continued to update the Chester County Weather website and have now completed and added a listing of the largest Chester County snowstorms across the 7 months of the year - October through April that we have recorded snow events. https://chescowx.com/top-snowfalls-by-month/ this includes the 2nd largest snowstorm in County history that occurred in March 1958 when between 19" to as much as 50" of snow fell across Chester and SE Berks Counties. See below.

Today should be almost 10 degrees warmer than yesterday...but still a few degrees below normal for mid-November with highs in the upper 40's to around 50 degrees. Temperatures look to stay near to below normal through Saturday before we briefly warm to above normal Sunday before falling back below normal to start the new work week. Our next rain chance looks to arrive Saturday night into Sunday.

Today should be almost 10 degrees warmer than yesterday...but still a few degrees below normal for mid-November with highs in the upper 40's to around 50 degrees. Temperatures look to stay near to below normal through Saturday before we briefly warm to above normal Sunday before falling back below normal to start the new work week. Our next rain chance looks to arrive Saturday night into Sunday.

If the below climate forecast model is to be believed....our area in the Northeast across the Northern Mid Atlantic would see some of the coldest temperatures relative to average over the next month through December 11th

Last night before midnight was our first below freezing temperature here in East Nantmeal since back on April 9th. That ends our freeze free growing season here in NW Chester County at 215 days. In the last 22 years the growing season has ranged from a few as 174 days in 2020 to 233 days in both 2005 and 2024. The earliest first freeze was October 13, 2012 and the latest November 23rd 2015. There has been some occasional snow flurries around the area today with temperatures remaining well below normal for mid-November with highs in the upper 30's. In fact, our high temperatures should stay below normal through the rest of the work week with highs remaining in the 40's in the hills and near 50 degrees in the valleys. We warm up well into the 50's by Sunday with rain chances increasing by then.

Last night before midnight was our first below freezing temperature here in East Nantmeal since back on April 9th. That ends our freeze free growing season here in NW Chester County at 215 days. In the last 22 years the growing season has ranged from a few as 174 days in 2020 to 233 days in both 2005 and 2024. The earliest first freeze was October 13, 2012 and the latest November 23rd 2015. There has been some occasional snow flurries around the area today with temperatures remaining well below normal for mid-November with highs in the upper 30's. In fact, our high temperatures should stay below normal through the rest of the work week with highs remaining in the 40's in the hills and near 50 degrees in the valleys. We warm up well into the 50's by Sunday with rain chances increasing by then.

first flakes of the season in NW Chesco first flakes 2025.mp4

My early winter take for Chester County is a cold start to December. Slightly below normal December and near to below temperature January with near to above normal February. Well above normal March temperatures. Snowfall not too far from average seasonal snowfall. 1 storm over 12" and 2 over 6" Chester County - higher elevations 40" of snow. Valley locations 35" of snow.

Nice write up!! Thank you!!

Most of the area received some beneficial rains with between 0.30" and 0.50" falling since last night. Here in East Nantmeal we have already recorded our high for today at midnight at 53.1 degrees. Temperatures have fallen off to the low 40's across the area and will only rise a degree or two this morning before we see temperatures slowly fall this afternoon. We should reach the 30's by late afternoon and fall below freezing early this evening. Tomorrow will be the coldest day with highs not too far from 40 degrees. We should see well below normal temperatures continuing for the rest of the week with highs mainly in the upper 40's to low 50's.

Most of the area received some beneficial rains with between 0.30" and 0.50" falling since last night. Here in East Nantmeal we have already recorded our high for today at midnight at 53.1 degrees. Temperatures have fallen off to the low 40's across the area and will only rise a degree or two this morning before we see temperatures slowly fall this afternoon. We should reach the 30's by late afternoon and fall below freezing early this evening. Tomorrow will be the coldest day with highs not too far from 40 degrees. We should see well below normal temperatures continuing for the rest of the week with highs mainly in the upper 40's to low 50's.

Some sun this morning, but showers are possible almost anytime today and tonight. We could see between 0.15" to 0.25" of rain by late tonight. Today will be our last mild day with temperatures a couple of degrees above normal with low 60's in the valleys. A strong cold front moves through late tonight and we fall back to near 40 degrees by morning. Our high temperature tomorrow will occur at midnight tonight with temperatures only rising a couple of degrees tomorrow morning before falling to freezing by tomorrow evening. Tuesday will likely see the higher spots remaining in the 30's for high temperatures. We will moderate a bit by Wednesday but temperatures for the rest of the week will remain well below normal for mid-November with highs struggling to escape the 40's through the week.

Some sun this morning, but showers are possible almost anytime today and tonight. We could see between 0.15" to 0.25" of rain by late tonight. Today will be our last mild day with temperatures a couple of degrees above normal with low 60's in the valleys. A strong cold front moves through late tonight and we fall back to near 40 degrees by morning. Our high temperature tomorrow will occur at midnight tonight with temperatures only rising a couple of degrees tomorrow morning before falling to freezing by tomorrow evening. Tuesday will likely see the higher spots remaining in the 30's for high temperatures. We will moderate a bit by Wednesday but temperatures for the rest of the week will remain well below normal for mid-November with highs struggling to escape the 40's through the week.

We picked up a general 0.20" to 0.30" of rain since last night across the area. Today will be our warmest day for at least the next week with temperatures topping out in the low 60's for most spots. Shower chances increase again tomorrow, and we will likely remain in the 50's for highs across the county. A strong cold front crosses the region Sunday night, and temperatures look to slowly fall during the day Monday reaching the 30's toward evening and the freezing mark by late evening. The NWS has the first chance of snow flurries in the forecast by Monday night into Tuesday morning. The coldest day will be Tuesday with some higher spots struggling to escape the 30's for high temperatures. We turn a bit milder but still below normal by Wednesday and turn a bit colder again to close out the work week.

We picked up a general 0.20" to 0.30" of rain since last night across the area. Today will be our warmest day for at least the next week with temperatures topping out in the low 60's for most spots. Shower chances increase again tomorrow, and we will likely remain in the 50's for highs across the county. A strong cold front crosses the region Sunday night, and temperatures look to slowly fall during the day Monday reaching the 30's toward evening and the freezing mark by late evening. The NWS has the first chance of snow flurries in the forecast by Monday night into Tuesday morning. The coldest day will be Tuesday with some higher spots struggling to escape the 30's for high temperatures. We turn a bit milder but still below normal by Wednesday and turn a bit colder again to close out the work week.

The NWS has terminated the growing season across the entire area as most spots have now seen freezing or frost conditions this season. The only exception remains the highest spots in our area including Atglen, West Grove and here in East Nantmeal where we only dropped down to 33.9 this morning. Our typical coldest spot just a few miles north of here at Warwick Township dropped to 24.2 degrees this morning - almost a 10-degree swing based on elevation. That was the 10th sub-freezing low this season at Warwick. Here in East Nantmeal we will have to wait for our first freeze till our cold shot that arrives on Monday night. The latest first freeze I have recorded here was last year on November 13th. Today we will see high temperatures well up into the 50's. Some showers are likely tonight before our warmest day for the next week tomorrow with highs into the low 60's. We start to cool down on Sunday with more rain possible into the evening before we turn much colder to start the new work week we could even see a snow flurry by Monday night.

The NWS has terminated the growing season across the entire area as most spots have now seen freezing or frost conditions this season. The only exception remains the highest spots in our area including Atglen, West Grove and here in East Nantmeal where we only dropped down to 33.9 this morning. Our typical coldest spot just a few miles north of here at Warwick Township dropped to 24.2 degrees this morning - almost a 10-degree swing based on elevation. That was the 10th sub-freezing low this season at Warwick. Here in East Nantmeal we will have to wait for our first freeze till our cold shot that arrives on Monday night. The latest first freeze I have recorded here was last year on November 13th. Today we will see high temperatures well up into the 50's. Some showers are likely tonight before our warmest day for the next week tomorrow with highs into the low 60's. We start to cool down on Sunday with more rain possible into the evening before we turn much colder to start the new work week we could even see a snow flurry by Monday night.

Below are the Top 50 greatest individual snowstorms by station across Chester and SE Berks Counties since 1893. How many of these have you lived through? https://chescowx.com/snow-seasons-storms/

Below are the Top 50 greatest individual snowstorms by station across Chester and SE Berks Counties since 1893. How many of these have you lived through? https://chescowx.com/snow-seasons-storms/

A year ago, today we saw record high temperatures across the area with temperatures in the 80's for many spots. Today we will see readings about 30 degrees cooler than that with highs mainly in the lower 50's. Some frost and freeze potential for especially valley spots tonight before we start a gradual warming trend through the weekend. We then turn sharply colder Sunday evening with a widespread hard freeze across the area by late Monday evening. We could even see some snow flurries later Monday. Our best shower chances look to be Friday night.

A year ago, today we saw record high temperatures across the area with temperatures in the 80's for many spots. Today we will see readings about 30 degrees cooler than that with highs mainly in the lower 50's. Some frost and freeze potential for especially valley spots tonight before we start a gradual warming trend through the weekend. We then turn sharply colder Sunday evening with a widespread hard freeze across the area by late Monday evening. We could even see some snow flurries later Monday. Our best shower chances look to be Friday night.