Parnassus, Pennsylvania Weather
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Click for Hazardous Weather Outlook for Parnassus, Pennsylvania
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Weather Forecast for Parnassus, Pennsylvania : Westmoreland County
Issued: 10:03 am EDT Sep 3, 2025 Latitude: 40.5570116 Longitude: -79.7619924 View on Google Maps

MouseOver for Detail Forecast
Today Tonight Thursday Friday Saturday Sunday Monday Tuesday
Sunny on Today Mostly Clear on Tonight 100% chance of thunderstorms on Thursday Mostly Sunny on Friday 40% chance of rain on Saturday Sunny on Sunday Sunny on Monday Mostly Sunny on Tuesday
High: 84°F Low: 59°F High: 72°F High: 81°F High: 70°F High: 71°F High: 74°F High: 76°F
Low: 55°F Low: 56°F Low: 47°F Low: 45°F Low: 49°F  
Sunny Mostly Clear Thunderstorms Mostly Sunny Rain Sunny Sunny Mostly Sunny
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Current Conditions at
ALLEGHENY COUNTY ARPT - (KAGC)
66°
Clear
as of 9:53 AM EDST
Rel. Humidity: 59%
Dew Point: 52°F
Visibility: 10 Miles
Pressure: 29.95 in.
Flight Rule: VFR
Wind Data
10 MPH
190° South
Cloud Level(s): Clear
Current Conditions at
BUTLER COUNTY - (KBTP)
66°
Clear
as of 9:56 AM EDST
Rel. Humidity: 63%
Dew Point: 54°F
Visibility: 10 Miles
Pressure: 29.96 in.
Flight Rule: VFR
Wind Data
8 MPH
180° South
Cloud Level(s): Clear
Current Conditions at
PITTSBURGH - (KPIT)
64°
Mostly Clear
as of 9:51 AM EDST
Rel. Humidity: 63%
Dew Point: 52°F
Visibility: 10 Miles
Pressure: 29.94 in.
Flight Rule: VFR
Wind Data
8 MPH
180° South
Cloud Level(s): Few at 6500ft, Few at 25000ft
Current Conditions at
LATROBE - (KLBE)
66°
Mostly Clear
as of 9:47 AM EDST
Rel. Humidity: 68%
Dew Point: 55°F
Visibility: 10 Miles
Pressure: 29.98 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Few at 7500ft
Sunny on Today Today... Sunny, with a high near 84. Southwest wind 5 to 7 mph.
Mostly Clear on Tonight Tonight... Mostly clear, with a low around 59. South wind around 6 mph.
100% chance of thunderstorms Thursday Thursday... Showers, with thunderstorms also possible after 11am. High near 72. South wind 9 to 13 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.
30% chance of thunderstorms Thursday Night Thursday Night... A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 2am. Patchy fog after midnight. Otherwise, mostly cloudy, with a low around 55. West wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Mostly Sunny on Friday Friday... Mostly sunny, with a high near 81. Southwest wind 6 to 15 mph, with gusts as high as 25 mph.
50% chance of thunderstorms Friday Night Friday Night... A chance of showers and thunderstorms. Mostly cloudy, with a low around 56. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
40% chance of rain Saturday Saturday... A chance of showers before 2pm. Mostly cloudy, with a high near 70. Chance of precipitation is 40%.
Cloudy on Saturday Night Saturday Night... Partly cloudy, with a low around 47.
Sunny on Sunday Sunday... Sunny, with a high near 71.
Mostly Clear on Sunday Night Sunday Night... Mostly clear, with a low around 45.
Sunny on Monday Monday... Sunny, with a high near 74.
Mostly Clear on Monday Night Monday Night... Mostly clear, with a low around 49.
Mostly Sunny on Tuesday Tuesday... Mostly sunny, with a high near 76.
Current Radar Image


Sun Almanac for Parnassus, Pennsylvania
Sunrise: 06:49 AM
Sunset: 7:48 PM
Civil Sunrise:06:21 AM
Civil Sunset: 8:16 PM
Nautical Sunrise: 05:48 AM
Nautical Sunset: 8:49 PM
Astro Sunrise: 05:13 AM
Astro Sunset: 9:23 PM
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