Donegal, Pennsylvania Weather
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Weather Forecast for Donegal, Pennsylvania : Westmoreland County
Issued: 1:02 am EDT Sep 1, 2025 Latitude: 40.112573 Longitude: -79.3825351 View on Google Maps

MouseOver for Detail Forecast
Overnight Labor Day Tuesday Wednesday Thursday Friday Saturday Sunday
Clear on Overnight Sunny on Labor Day Mostly Sunny on Tuesday 20% chance of thunderstorms on Wednesday 80% chance of thunderstorms on Thursday 30% chance of rain on Friday Mostly Sunny on Saturday Sunny on Sunday
Low: 48°F High: 75°F High: 74°F High: 75°F High: 74°F High: 71°F High: 70°F High: 68°F
Low: 49°F Low: 52°F Low: 56°F Low: 52°F Low: 52°F Low: 46°F  
Clear Sunny Mostly Sunny Thunderstorms Thunderstorms Rain Mostly Sunny Sunny
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Current Conditions at
LATROBE - (KLBE)
52°
Clear
as of 1:15 AM EDST
Rel. Humidity: 87%
Dew Point: 48°F
Visibility: 10 Miles
Pressure: 30.26 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
JOHNSTOWN - (KJST)
57°
Clear
as of 12:54 AM EDST
Rel. Humidity: 54%
Dew Point: 41°F
Visibility: 10 Miles
Pressure: 30.27 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
ALLEGHENY COUNTY ARPT - (KAGC)
63°
Clear
as of 12:53 AM EDST
Rel. Humidity: 48%
Dew Point: 43°F
Visibility: 10 Miles
Pressure: 30.24 in.
Flight Rule: VFR
Wind Data
3 MPH
090° East
Cloud Level(s): Clear
Current Conditions at
STEWART FIELD - (KIDI)
50°
Clear
as of 1:15 AM EDST
Rel. Humidity: 81%
Dew Point: 45°F
Visibility: 10 Miles
Pressure: 30.26 in.
Flight Rule: VFR
Wind Data
7 MPH
100° East
Cloud Level(s): Clear
Clear on Overnight Overnight... Clear, with a low around 48. Calm wind.

Sunny on Labor Day Labor Day... Sunny, with a high near 75. Calm wind becoming east around 5 mph in the afternoon.

Mostly Clear on Monday Night Monday Night... Mostly clear, with a low around 49. Calm wind.

Mostly Sunny on Tuesday Tuesday... Mostly sunny, with a high near 74. Calm wind.

Mostly Clear on Tuesday Night Tuesday Night... Mostly clear, with a low around 52. Calm wind.

20% chance of thunderstorms Wednesday Wednesday... A slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 75. Chance of precipitation is 20%.

30% chance of rain Wednesday Night Wednesday Night... A chance of showers after 2am. Partly cloudy, with a low around 56. Chance of precipitation is 30%.

80% chance of thunderstorms Thursday Thursday... A chance of showers, then showers and possibly a thunderstorm after 2pm. High near 74. Chance of precipitation is 80%.

80% chance of thunderstorms Thursday Night Thursday Night... Showers and possibly a thunderstorm before 8pm, then showers likely. Low around 52. Chance of precipitation is 80%.

30% chance of rain Friday Friday... A chance of showers before 8am. Mostly sunny, with a high near 71. Chance of precipitation is 30%.

Cloudy on Friday Night Friday Night... Partly cloudy, with a low around 52.

Mostly Sunny on Saturday Saturday... Mostly sunny, with a high near 70.

Cloudy on Saturday Night Saturday Night... Partly cloudy, with a low around 46.

Sunny on Sunday Sunday... Sunny, with a high near 68.

Current Radar Image


Sun Almanac for Donegal, Pennsylvania
Sunrise: 06:46 AM
Sunset: 7:49 PM
Civil Sunrise:06:18 AM
Civil Sunset: 8:17 PM
Nautical Sunrise: 05:45 AM
Nautical Sunset: 8:50 PM
Astro Sunrise: 05:10 AM
Astro Sunset: 9:24 PM
Any use of the information on this page is at your own risk. This information should not be relied upon in life-threatening situations, potential financial loss situations or in lieu of any officially disseminated information. Visit the National Weather Service for official information.