River Valley, Pennsylvania Weather
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Weather Forecast for River Valley, Pennsylvania : Allegheny County
Issued: 1:02 am EDT Sep 1, 2025 Latitude: 40.5461787 Longitude: -79.8214385 View on Google Maps

MouseOver for Detail Forecast
Overnight Labor Day Tuesday Wednesday Thursday Friday Saturday Sunday
Clear on Overnight Sunny on Labor Day Sunny on Tuesday Morning Fog on Wednesday 90% chance of thunderstorms on Thursday Mostly Sunny on Friday Mostly Sunny on Saturday Sunny on Sunday
Low: 50°F High: 79°F High: 79°F High: 80°F High: 75°F High: 73°F High: 72°F High: 71°F
Low: 52°F Low: 54°F Low: 59°F Low: 53°F Low: 53°F Low: 47°F  
Clear Sunny Sunny Morning Fog Thunderstorms Mostly Sunny Mostly Sunny Sunny
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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
BUTLER COUNTY - (KBTP)
54°
Clear
as of 12:56 AM EDST
Rel. Humidity: 93%
Dew Point: 52°F
Visibility: 10 Miles
Pressure: 30.26 in.
Flight Rule: VFR
Wind Data
5 MPH
040° Northeast
Cloud Level(s): Clear
Current Conditions at
PITTSBURGH - (KPIT)
61°
Mostly Clear
as of 12:51 AM EDST
Rel. Humidity: 59%
Dew Point: 46°F
Visibility: 10 Miles
Pressure: 30.23 in.
Flight Rule: VFR
Wind Data
5 MPH
030° Northeast
Cloud Level(s): Few at 25000ft
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
Clear on Overnight Overnight... Clear, with a low around 50. Calm wind.
Sunny on Labor Day Labor Day... Sunny, with a high near 79. Calm wind becoming east around 6 mph in the afternoon.
Mostly Clear on Monday Night Monday Night... Mostly clear, with a low around 52. Light northeast wind.
Sunny on Tuesday Tuesday... Sunny, with a high near 79. Light southeast wind.
Morning Fog on Tuesday Night Tuesday Night... Patchy fog after 5am. Otherwise, partly cloudy, with a low around 54. Calm wind.
Morning Fog on Wednesday Wednesday... Patchy fog before 7am. Otherwise, mostly sunny, with a high near 80.
30% chance of rain Wednesday Night Wednesday Night... A chance of showers after 2am. Partly cloudy, with a low around 59. Chance of precipitation is 30%.
90% chance of thunderstorms Thursday Thursday... A chance of showers, then showers and possibly a thunderstorm after 2pm. High near 75. Chance of precipitation is 90%.
80% chance of thunderstorms Thursday Night Thursday Night... Showers and possibly a thunderstorm before 8pm, then a chance of showers between 8pm and 2am. Low around 53. Chance of precipitation is 80%.
Mostly Sunny on Friday Friday... Mostly sunny, with a high near 73.
Cloudy on Friday Night Friday Night... Partly cloudy, with a low around 53.
Mostly Sunny on Saturday Saturday... Mostly sunny, with a high near 72.
Cloudy on Saturday Night Saturday Night... Partly cloudy, with a low around 47.
Sunny on Sunday Sunday... Sunny, with a high near 71.
Current Radar Image


Sun Almanac for River Valley, Pennsylvania
Sunrise: 06:47 AM
Sunset: 7:51 PM
Civil Sunrise:06:19 AM
Civil Sunset: 8:19 PM
Nautical Sunrise: 05:46 AM
Nautical Sunset: 8:53 PM
Astro Sunrise: 05:11 AM
Astro Sunset: 9:27 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.