Central PA Spring 2026 Discussion/Obs Thread

[ChescoWx]

Today will be out last day with temperatures in the 80’s with highs in some valley spots getting within a couple degrees of 90. We fall back into the 70’s tomorrow and Saturday before we fall back below normal by Sunday through next Tuesday. Some shower chances later tomorrow and a better chance on Saturday night. We could have some freeze or frost concerns by Monday night into Tuesday morning.

[ChescoWx]

As per the World Meteorological Organization (WMO) Current climate normals are calculated using the past 3 complete decades and recalculated every 10 years. So, I went back and calculated what was normal for the last 10 climate normal periods specifically for Chester County PA. The below show what the climate normals were for the 10 years following each calculation with the earliest being 1901-1930 normals and the latest being our current climate normal period of 1991-2020. Averages in red are the warmest and blue the coolest across those periods. Of note our warmest climate normal period was 1931-1960 and our coolest period was 1961-1990.