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

Dangerous Heat and Heavy Rainfall into the Weekend

Hot temperatures and high humidity are forecast to continue across the mid-Mississippi Valley into this weekend. Heat Advisories remain in effect. Heavy to excessive rainfall occurring at times through the weekend could bring areas of flooding to parts of the northern Rockies, upper Midwest, central Great Lakes, and southern New England. Read More >

Hazardous Weather Conditions

Current conditions at

Pittsburgh - Allegheny County Airport (KAGC)

Lat: 40.36°NLon: 79.92°WElev: 1237ft.

Light Rain Fog/Mist

68°F

20°C

Humidity 96%
Wind Speed SW 7 mph
Barometer 29.97 in (1014.7 mb)
Dewpoint 67°F (19°C)
Visibility 3.00 mi
Last update 20 Sep 9:53 am EDT
Extended Forecast for

Millvale PA

  • Today

    Today: Showers and thunderstorms, mainly before 4pm. Patchy fog between 4pm and 5pm. High near 77. Northwest wind around 8 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 77 °F

    Showers and
    Patchy Fog

  • Tonight

    Tonight: Scattered showers and thunderstorms. Patchy fog. Otherwise, mostly cloudy, with a low around 58. Northeast wind 6 to 8 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 58 °F

    Scattered
    Showers and
    Patchy Fog

  • Monday

    Monday: Showers likely before 2pm, then showers likely and possibly a thunderstorm between 2pm and 4pm, then a chance of showers and thunderstorms after 4pm. Patchy fog between 7am and 10am. Otherwise, mostly cloudy, with a high near 66. Northeast wind 11 to 13 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    High: 66 °F

    Showers
    Likely and
    Patchy Fog

  • Monday Night

    Monday Night: Showers likely, with thunderstorms also possible after 2am. Cloudy, with a low around 56. East wind 11 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 56 °F

    Showers
    Likely

  • Tuesday

    Tuesday: Showers likely. Cloudy, with a high near 66. East wind 11 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 66 °F

    Showers
    Likely

  • Tuesday Night

    Tuesday Night: Showers and possibly a thunderstorm. Low around 53. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 53 °F

    Showers

  • Wednesday

    Wednesday: Showers likely. Cloudy, with a high near 63. Chance of precipitation is 70%.

    High: 63 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: A chance of showers. Cloudy, with a low around 52. Chance of precipitation is 50%.

    Low: 52 °F

    Chance
    Showers

  • Thursday

    Thursday: A chance of showers before 2pm. Mostly cloudy, with a high near 64. Chance of precipitation is 30%.

    High: 64 °F

    Chance
    Showers

Detailed Forecast

Today
Showers and thunderstorms, mainly before 4pm. Patchy fog between 4pm and 5pm. High near 77. Northwest wind around 8 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
Scattered showers and thunderstorms. Patchy fog. Otherwise, mostly cloudy, with a low around 58. Northeast wind 6 to 8 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Monday
Showers likely before 2pm, then showers likely and possibly a thunderstorm between 2pm and 4pm, then a chance of showers and thunderstorms after 4pm. Patchy fog between 7am and 10am. Otherwise, mostly cloudy, with a high near 66. Northeast wind 11 to 13 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Monday Night
Showers likely, with thunderstorms also possible after 2am. Cloudy, with a low around 56. East wind 11 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Tuesday
Showers likely. Cloudy, with a high near 66. East wind 11 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Tuesday Night
Showers and possibly a thunderstorm. Low around 53. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday
Showers likely. Cloudy, with a high near 63. Chance of precipitation is 70%.
Wednesday Night
A chance of showers. Cloudy, with a low around 52. Chance of precipitation is 50%.
Thursday
A chance of showers before 2pm. Mostly cloudy, with a high near 64. Chance of precipitation is 30%.
Thursday Night
Mostly cloudy, with a low around 50.
Friday
Mostly sunny, with a high near 68.
Friday Night
Partly cloudy, with a low around 50.
Saturday
Mostly sunny, with a high near 70.
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ABOUT THIS FORECAST

 
Point Forecast:
Millvale PA
 40.48°N 79.98°W (Elev. 827 ft)
Last Update:
7:02 am EDT Sep 20, 2026
Forecast Valid:
10am EDT Sep 20, 2026-6pm EDT Sep 26, 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