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

Pittsburgh - Allegheny County Airport (KAGC)

Lat: 40.36°NLon: 79.92°WElev: 1237ft.

Overcast

69°F

21°C

Humidity 57%
Wind Speed SW 12 mph
Barometer 30.01 in (1016.4 mb)
Dewpoint 53°F (12°C)
Visibility 10.00 mi
Last update 16 May 1:53 pm EDT
Extended Forecast for

West Mifflin PA

  • This Afternoon

    This Afternoon: Showers and thunderstorms likely, mainly between 3pm and 5pm. Increasing clouds, with a high near 74. Southwest wind around 15 mph, with gusts as high as 28 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 74 °F

    T-storms
    Likely

  • Tonight

    Tonight: Showers and thunderstorms likely before 10pm, then a slight chance of showers after 5am. Mostly cloudy, with a low around 61. Southwest wind 7 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 61 °F

    T-storms
    Likely then
    Mostly Cloudy

  • Sunday

    Sunday: A chance of showers before 7am, then a slight chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 82. Southwest wind around 7 mph. Chance of precipitation is 30%.

    High: 82 °F

    Chance
    Showers then
    Slight Chance
    T-storms

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 64. Southeast wind around 6 mph.

    Low: 64 °F

    Partly Cloudy

  • Monday

    Monday: Sunny and hot, with a high near 91. Southwest wind 7 to 11 mph.

    High: 91 °F

    Hot

  • Monday Night

    Monday Night: Partly cloudy, with a low around 68.

    Low: 68 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny and hot, with a high near 91.

    High: 91 °F

    Hot

  • Tuesday Night

    Tuesday Night: A chance of showers after 2am. Mostly cloudy, with a low around 71. Chance of precipitation is 50%.

    Low: 71 °F

    Partly Cloudy
    then Chance
    Showers

  • Wednesday

    Wednesday: Showers, with thunderstorms also possible after 2pm. High near 83. Chance of precipitation is 90%.

    High: 83 °F

    Showers

Detailed Forecast

This Afternoon
Showers and thunderstorms likely, mainly between 3pm and 5pm. Increasing clouds, with a high near 74. Southwest wind around 15 mph, with gusts as high as 28 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
Showers and thunderstorms likely before 10pm, then a slight chance of showers after 5am. Mostly cloudy, with a low around 61. Southwest wind 7 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday
A chance of showers before 7am, then a slight chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 82. Southwest wind around 7 mph. Chance of precipitation is 30%.
Sunday Night
Partly cloudy, with a low around 64. Southeast wind around 6 mph.
Monday
Sunny and hot, with a high near 91. Southwest wind 7 to 11 mph.
Monday Night
Partly cloudy, with a low around 68.
Tuesday
Mostly sunny and hot, with a high near 91.
Tuesday Night
A chance of showers after 2am. Mostly cloudy, with a low around 71. Chance of precipitation is 50%.
Wednesday
Showers, with thunderstorms also possible after 2pm. High near 83. Chance of precipitation is 90%.
Wednesday Night
A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 2am. Mostly cloudy, with a low around 54. Chance of precipitation is 40%.
Thursday
Partly sunny, with a high near 68.
Thursday Night
Mostly cloudy, with a low around 52.
Friday
A chance of showers. Partly sunny, with a high near 70. Chance of precipitation is 30%.
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ABOUT THIS FORECAST

 
Point Forecast:
West Mifflin PA
 40.36°N 79.91°W (Elev. 1017 ft)
Last Update:
1:06 pm EDT May 16, 2026
Forecast Valid:
1pm EDT May 16, 2026-6pm EDT May 22, 2026
 
Forecast Discussion
 
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Additional Resources

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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