Donegal, PA Weather Tomorrow

Tomorrow's Donegal weather report includes an accurate 5 day forecast with 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 Donegal area and around Westmoreland county, Pennsylvania.
Updated: Wed Oct 21st 2026 7:15 PM EDT
Donegal, PA Weather – 10-21 – Sunny
62° / 40°
Sunny
A sunny day is in the forecast for Donegal, with a high of 62°F and a low of 40°F. There's a very small chance of rainfall, only about 4%. Winds will be light at 6mph and gusts of 13mph at 10 PM. The humidity will be on the higher side, averaging about 61%, the maximum being 72% at 9 PM and 69% being its lowest at 8 PM. Barometric pressure is its highest of 30.21inHg at 9 PM, a lowest point of 30.19inHg at 8 PM with an avg 30.2inHg.
Donegal, PA Weather – 10-22 – Sunny
58° / 37°

Weather Tomorrow

Sunny
Daytime highs will reach 58°F with lows dropping to 37°F in Donegal, where bright and sunny conditions. There's a very small chance of rainfall, only about 6%. Winds will be light at 8mph and gusts of 14.2mph at 5 PM. The humidity will be on the higher side, averaging about 70%, the maximum being 89% at 8 AM and 42% being its lowest at 1 PM. Barometric pressure is its highest of 30.26inHg at 10 PM, a lowest point of 30.15inHg at 3 PM with an avg 30.2inHg.
Donegal, PA Weather – 10-23 – Sunny
61° / 41°
Sunny
Bright and sunny conditions in Donegal, with a high of 61°F and a low of 41°F. There's a very small chance of rainfall, only about 7%. Winds will be light at 7mph and gusts of 24mph at 10 PM. The humidity will be on the higher side, averaging about 74%, the maximum being 96% at 8 AM and 41% being its lowest at 3 PM. Barometric pressure is its highest of 30.44inHg at 11 PM, a lowest point of 30.27inHg at 2 AM with an avg 30.35inHg.
Donegal, PA Weather – 10-24 – Sunny
63° / 39°
Sunny
Bright and sunny conditions in Donegal, with a high of 63°F and a low of 39°F. There's a very small chance of rainfall, only about 6%. Winds will be light at 8mph and gusts of 25.3mph at 12 AM. The humidity will be on the higher side, averaging about 70%, the maximum being 86% at 6 AM and 45% being its lowest at 3 PM. Barometric pressure is its highest of 30.52inHg at 9 AM, a lowest point of 30.42inHg at 3 PM with an avg 30.47inHg.
Donegal, PA Weather – 10-25 – Sunny
65° / 41°
Sunny
Donegal is set for a sunny day with temperatures peaking at 65°F and dipping to 41°F. There's a very small chance of rainfall, only about 7%. Winds will be light at 6mph and gusts of 16.1mph at 1 AM. The humidity will be on the higher side, averaging about 72%, the maximum being 88% at 7 AM and 43% being its lowest at 3 PM. Barometric pressure is its highest of 30.54inHg at 7 AM, a lowest point of 30.4inHg at 4 PM with an avg 30.48inHg.
Donegal, PA Weather – 10-26 – Sunny
63° / 44°
Sunny
Donegal is set for a sunny day with temperatures peaking at 63°F and dipping to 44°F. There's a very small chance of rainfall, only about 10%. Winds will be light at 6mph and gusts of 14.8mph at 2 AM. The humidity will be on the higher side, averaging about 72%, the maximum being 85% at 7 AM and 49% being its lowest at 2 PM. Barometric pressure is its highest of 30.43inHg at 12 AM, a lowest point of 30.27inHg at 4 PM with an avg 30.35inHg.

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