West Chester, PA Weather Tomorrow

Know what to expect with tomorrow's West Chester weather and the next 5 days of forecasts covering precipitation potential, daytime and nighttime forecasts, temperature highs and lows in Fahrenheit and Celsius, sunrise and sunset times, cloud cover, wind chill, wind speed, and wind direction for the West Chester area and around Chester county, Pennsylvania.
Updated: Fri Sep 11th 2026 12:30 PM EDT
West Chester, PA Weather – 9-11 – Scattered Showers
86° / 68°
Scattered Showers
Scattered showers are in the forecast for West Chester, with a high of 86°F and a low of 68°F. Rainfall predicted to have a 57% chance with an estimated 0.04in. Winds will be light at 8mph and gusts of 11.4mph at 2 PM. The humidity will be on the higher side, averaging about 63%, the maximum being 64% at 11 PM and 44% being its lowest at 4 PM. Barometric pressure is its highest of 30.03inHg at 10 PM, a lowest point of 29.98inHg at 4 PM with an avg 30inHg.
West Chester, PA Weather – 9-12 – Overcast
78° / 66°

Weather Tomorrow

Overcast
In West Chester, it will be overcast with highs near 78°F and lows around 66°F. The chance of rain is 78% with an estimated 0.27in. Winds will be light at 7mph and gusts of 16mph at 11 PM. The humidity will be on the higher side, averaging about 70%, the maximum being 99% at 11 PM and 53% being its lowest at 10 AM. Barometric pressure is its highest of 30.12inHg at 9 AM, a lowest point of 30.04inHg at 12 AM with an avg 30.08inHg.
West Chester, PA Weather – 9-13 – Scattered Showers
80° / 69°
Scattered Showers
West Chester could see passing showers with daytime highs of 80°F and nighttime lows near 69°F. The chance of rain is 89% with an estimated 0.62in. Winds will be light at 7mph and gusts of 14.1mph at 7 PM. High humidity with average of 88% is anticipated, the maximum being 99% at 1 AM and 71% being its lowest at 4 PM. Barometric pressure is its highest of 30.04inHg at 12 AM, a lowest point of 29.95inHg at 5 PM with an avg 30inHg.
West Chester, PA Weather – 9-14 – Overcast
77° / 66°
Overcast
West Chester is set for overcast with temperatures peaking at 77°F and dipping to 66°F. There might be light rainfall having a 13% chance. Wind will be moderate, blowing around 11mph on average and gusts of 19.9mph at 9 PM. The humidity will be on the higher side, averaging about 66%, the maximum being 90% at 7 AM and 48% being its lowest at 3 PM. Barometric pressure is its highest of 30.25inHg at 11 PM, a lowest point of 29.99inHg at 3 AM with an avg 30.1inHg.
West Chester, PA Weather – 9-15 – Overcast
73° / 61°
Overcast
Daytime highs will reach 73°F with lows dropping to 61°F in West Chester, where it will be overcast. There's a very small chance of rainfall, only about 8%. Winds will be light at 8mph and gusts of 18.6mph at 12 AM. Humidity levels should be comfortable, sitting around 56% on average, the maximum being 75% at 11 PM and 36% being its lowest at 4 PM. Barometric pressure is its highest of 30.37inHg at 12 PM, a lowest point of 30.26inHg at 3 AM with an avg 30.32inHg.
West Chester, PA Weather – 9-16 – Sunny
84° / 60°
Sunny
It will be sunny in West Chester, with a high of 84°F and a low of 60°F. There's a very small chance of rainfall, only about 8%. Winds will be light at 8mph and gusts of 21.3mph at 11 PM. The humidity will be on the higher side, averaging about 73%, the maximum being 82% at 11 PM and 60% being its lowest at 2 PM. Barometric pressure is its highest of 30.36inHg at 3 AM, a lowest point of 30.18inHg at 5 PM with an avg 30.27inHg.

Currently

Patchy Rain Nearby 75°F
30.02 inHg.
Barometer
55%
Humidity
N 9 mph
Wind
Patchy Rain Nearby

5 Day Forecast Nearby

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