Top 5 All-Time Chester County July Rainfall (1894 to Present)

[ChescoWx]

Through yesterday we stand at 9.39" of rain here in East Nantmeal Township in NW Chester County PA. With the current rain and more overnight...we have an excellent chance to be in the top-3 or possibly eclipse the all-time wettest July in history over the last 124 years of local weather records.

Top Rainfall Months by year

1) 1916 (10.62")

2) 1914 (10.29")

3) 1984 (10.26")

4) 1979 (9.54")

5) 1919 (9.48")

The All-Time record month will remain well out of reach....which was the 17.81" that fell across Chester County PA way back in August 1955.

Paul

[ChescoWx]

With yesterday's 0.15" of rain we are tied for 4th wettest July at 9.54" with July 1979.  Need another 1.09" before midnight tonight to set a new monthly record (10.62" - 1916) Also of interest despite the very wet month we are running slightly below normal temperature wise at 73.8 degrees (0.1 below normal). Three of our 1st 6 months have averaged below normal here in Chester County PA

[Hurricane Agnes]

3 minutes ago, ChescoPaWxman said:

Also of interest despite the very wet month we are running slightly below normal temperature wise at 73.8 degrees (0.1 below normal). Three of our 1st 6 months have averaged below normal here in Chester County PA

I expect the below normal temps were partly due to the rainy/overcast pattern, with not enough sun to burn off the ground moisture which would allow the temps to rise higher than they have.  That big Bermuda High out in the western Atlantic has been kept at bay by the trough to the west.  If that anomalous trough hadn't been there, that Bermuda High would have prevailed big time.