ChescoWx

Today will be another below normal temperature day across the area before we start a warming trend to close out the work week. The hottest day will be Friday with widespread 90's across the area. We turn wetter and a little cooler over the weekend with rain chances - but not a washout for much of the weekend.

Adapted from one of my favorite professional meteorologists....

Low temperatures this morning ran between 5 and 7 degrees below normal for late July. The lowest I found was the 55.1 degree reading at Warwick Township. Another beauty of a day today with highs ranging from the upper 70's at higher spots to the low 80's in valley locations. We start a warming trend back to near normal on Thursday and then above normal temperatures by Friday with some spots cracking 90 degrees for the first time in more than a month. Shower chances return over the weekend.

Low temperatures this morning ran between 5 and 7 degrees below normal for late July. The lowest I found was the 55.1 degree reading at Warwick Township. Another beauty of a day today with highs ranging from the upper 70's at higher spots to the low 80's in valley locations. We start a warming trend back to near normal on Thursday and then above normal temperatures by Friday with some spots cracking 90 degrees for the first time in more than a month. Shower chances return over the weekend.

Get ready for our best stretch of comfortable summer weather over the next 3 days before we warm up by the end of the work week. Temperatures this morning dropped into the mid to upper 60's across the area. Today through Wednesday we will see highs not too far from 80 degrees with low humidity. Nighttime lows both tonight and tomorrow night may reach the 50's - open up those windows! The heat returns Friday in fact many areas that have yet to see a 90-degree day here in July may see it to close out the week. Shower chances return by next weekend.

Get ready for our best stretch of comfortable summer weather over the next 3 days before we warm up by the end of the work week. Temperatures this morning dropped into the mid to upper 60's across the area. Today through Wednesday we will see highs not too far from 80 degrees with low humidity. Nighttime lows both tonight and tomorrow night may reach the 50's - open up those windows! The heat returns Friday in fact many areas that have yet to see a 90-degree day here in July may see it to close out the week. Shower chances return by next weekend.

Today will be our last warm and humid day till late in the upcoming work week. Temperatures tomorrow and Tuesday may struggle to escape the 70's. Nighttime lows should reach the low to mid 60's tomorrow morning and the upper 50's by Tuesday morning. This will be a great chance to open up those windows and get some fresh air in the place! Any shower chances look to be later today with the cold front. We start a warmup by Thursday with 90's possible to close out the work week.

Today will be our last warm and humid day till late in the upcoming work week. Temperatures tomorrow and Tuesday may struggle to escape the 70's. Nighttime lows should reach the low to mid 60's tomorrow morning and the upper 50's by Tuesday morning. This will be a great chance to open up those windows and get some fresh air in the place! Any shower chances look to be later today with the cold front. We start a warmup by Thursday with 90's possible to close out the work week.

Today marks on average the warmest day of the year....we begin the slow slide toward winter tomorrow as we see our average temperatures fall before reaching their lowest on January 19th. Yesterday temperatures across much of Chester County remained in below average upper 70's to low 80's for highs. Today looks like we will see similar temperatures. There have been some light showers around the area this morning and we should see more developing later this afternoon. Tomorrow will be warmer and more humid before we turn refreshingly cooler for Monday through Wednesday with likely our best stretch of weather so far this summer. Lows by Tuesday morning should be in the 50's for most spots. We start to turn hotter again by the end of the next work week.

Today marks on average the warmest day of the year....we begin the slow slide toward winter tomorrow as we see our average temperatures fall before reaching their lowest on January 19th. Yesterday temperatures across much of Chester County remained in below average upper 70's to low 80's for highs. Today looks like we will see similar temperatures. There have been some light showers around the area this morning and we should see more developing later this afternoon. Tomorrow will be warmer and more humid before we turn refreshingly cooler for Monday through Wednesday with likely our best stretch of weather so far this summer. Lows by Tuesday morning should be in the 50's for most spots. We start to turn hotter again by the end of the next work week.

Today will be the warmest day of the next week with many spots outside of the higher elevations reaching 90 degrees for the first time here in July. We turn cooler and finally less humid tomorrow and Saturday with temperatures running a couple of degrees below normal highs for late July. Shower chances increase again by Saturday night into Sunday. Early next week looks like it will continue to be a little below normal with comfortable humidity levels.

Today will be the warmest day of the next week with many spots outside of the higher elevations reaching 90 degrees for the first time here in July. We turn cooler and finally less humid tomorrow and Saturday with temperatures running a couple of degrees below normal highs for late July. Shower chances increase again by Saturday night into Sunday. Early next week looks like it will continue to be a little below normal with comfortable humidity levels.

Actually at Avondale 2N almost flat very slight upward trend mainly thanks to last year....after this low 90 plus season it will change! The clear data of remaining validated stations is a downward trend in 90 plus days!

If we exclude it the trend of course remains...

LOL!! so the cooling trend must be real if the UHI PHL Airport agrees!!

2012 for Atglen

Yes - below is over the last 15 years across 15 Chester County PA stations with reporting and no movements

I mean across all of the other stations in the county

But the rest of the data still clearly shows a lessening of 90 plus days....not surprising in our current warm cycle with higher DPs and mins with lower maxes.

By the way Charlie that Phoenixville chart includes Ghastly ghost data from 1896 thru 1914.....wonder if that fake data impacted your charting??

Nope - Phoenixville 90 plus days are indeed decreasing

As seems to always be the case in this pattern showers are again likely later today into this evening. Today and tomorrow look like our warmest days...with some spots especially tomorrow possibly touching 90 degrees for the first time here in the month of July. The NWS has issued a heat advisory for tomorrow afternoon. We then turn a bit cooler with high temperatures maybe a couple of degrees below normal, starting Friday and through the weekend with highs in the low 80's. Highest rain chances after this evening look to be Saturday night into Sunday.

As seems to always be the case in this pattern showers are again likely later today into this evening. Today and tomorrow look like our warmest days...with some spots especially tomorrow possibly touching 90 degrees for the first time here in the month of July. The NWS has issued a heat advisory for tomorrow afternoon. We then turn a bit cooler with high temperatures maybe a couple of degrees below normal, starting Friday and through the weekend with highs in the low 80's. Highest rain chances after this evening look to be Saturday night into Sunday.

An analysis below of our declining number of 90 degree days over the past 7.5 decades here in Chester County. I have split the stations by elevation. Those over 500 ft vs those at lower elevations.

An analysis below of our declining number of 90 degree days over the past 7.5 decades here in Chester County. I have split the stations by elevation. Those over 500 ft vs those at lower elevations.