National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Heavy to Excessive Rainfall This Week from the Southwest into Central U.S.

Pacific tropical moisture wrapping into a storm over the southwest U.S. will continue a multi-day heavy rainfall event this week that will extend into the Midwest and southern Plains. Considerable flash flooding is possible across portions of New Mexico and west Texas today through Wednesday. Read More >

Current conditions at

Pittsburgh/Butler Regional Airport (KBTP)

Lat: 40.78°NLon: 79.96°WElev: 1248ft.

Overcast

61°F

16°C

Humidity 93%
Wind Speed Calm
Barometer 30.12 in (1020.3 mb)
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 29 Sep 9:56 am EDT
Extended Forecast for

Harrison Township PA

  • Today

    Today: Cloudy, then gradually becoming mostly sunny, with a high near 75. Calm wind.

    High: 75 °F

    Decreasing
    Clouds

  • Tonight

    Tonight: Patchy fog after 9pm. Otherwise, partly cloudy, with a low around 53. Calm wind.

    Low: 53 °F

    Patchy Fog

  • Wednesday

    Wednesday: Areas of fog before 10am. Otherwise, partly sunny, with a high near 77. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 77 °F

    Areas Fog
    then Partly
    Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 59. Calm wind.

    Low: 59 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 82. Southwest wind 5 to 10 mph.

    High: 82 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 63.

    Low: 63 °F

    Partly Cloudy

  • Friday

    Friday: Showers likely after 2pm. Partly sunny, with a high near 80. Chance of precipitation is 70%.

    High: 80 °F

    Partly Sunny
    then Showers
    Likely

  • Friday Night

    Friday Night: Showers likely, mainly before 8pm. Mostly cloudy, with a low around 53. Chance of precipitation is 60%.

    Low: 53 °F

    Showers
    Likely

  • Saturday

    Saturday: A chance of showers. Mostly cloudy, with a high near 69. Chance of precipitation is 40%.

    High: 69 °F

    Chance
    Showers

Detailed Forecast

Today
Cloudy, then gradually becoming mostly sunny, with a high near 75. Calm wind.
Tonight
Patchy fog after 9pm. Otherwise, partly cloudy, with a low around 53. Calm wind.
Wednesday
Areas of fog before 10am. Otherwise, partly sunny, with a high near 77. Calm wind becoming southwest around 5 mph in the afternoon.
Wednesday Night
Mostly cloudy, with a low around 59. Calm wind.
Thursday
Mostly sunny, with a high near 82. Southwest wind 5 to 10 mph.
Thursday Night
Partly cloudy, with a low around 63.
Friday
Showers likely after 2pm. Partly sunny, with a high near 80. Chance of precipitation is 70%.
Friday Night
Showers likely, mainly before 8pm. Mostly cloudy, with a low around 53. Chance of precipitation is 60%.
Saturday
A chance of showers. Mostly cloudy, with a high near 69. Chance of precipitation is 40%.
Saturday Night
A chance of showers. The rain could be heavy at times. Mostly cloudy, with a low around 54. Chance of precipitation is 50%.
Sunday
A chance of showers. The rain could be heavy at times. Mostly cloudy, with a high near 69. Chance of precipitation is 50%.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 47. Chance of precipitation is 30%.
Monday
Mostly sunny, with a high near 64.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Harrison Township PA
 40.63°N 79.72°W (Elev. 997 ft)
Last Update:
10:27 am EDT Sep 29, 2026
Forecast Valid:
10am EDT Sep 29, 2026-6pm EDT Oct 5, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation