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A trough brings cooler than average
temps through the late week period

East Central PA Forecast

Our East Central PA forecast region includes the Lehigh Valley, Hamburg, Reading, Lebanon, Harrisburg, Pottsville & surrounding areas. Forecasts are updated daily M-F, and Saturday that covers both weekend days – never on Sundays.

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Trough settles in and keeps temperatures cooler than average through the end of the work week…

Mostly sunny skies with comfortable temperatures and low humidity on Wednesday as the next transient trough settles into the region. Highs will reach the middle 70s today, and under mostly clear skies overnight, temps drop to the lower 50s.

Another mostly sunny day on Thursday with temperatures moderating a few degrees, then partly cloudy on Friday and temperatures rebounding to near the 80° mark. A cold front will approach the region this weekend, and now it appears the ECMWF was correct to keep the front stalled to our west for most of the weekend and at least part of next week. For now, we’ll keep isolated thunderstorms in the forecast for just Sunday afternoon, and leave mentions of precipitation out of the forecast for Saturday. Expect the cold front to slowly inch closer to the region on Monday and Tuesday with variable clouds and isolated to scattered showers and thunderstorms possible each afternoon with that front still off to our west.

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Forecaster: Martrich 23 June 0300z

Daily climatology for Allentown, PA

Average highAverage lowRecord high temp (year)Record low temp (year)
84°F62°F95°F (1965)46°F (1992)