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Hazardous Weather Conditions

Current conditions at

Pittsburgh - Allegheny County Airport (KAGC)

Lat: 40.36°NLon: 79.92°WElev: 1237ft.

Overcast

47°F

8°C

Humidity 66%
Wind Speed NW 9 G 16 mph
Barometer 29.92 in (1013.9 mb)
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Wind Chill43°F (6°C)
Last update 30 Apr 2:53 pm EDT
Extended Forecast for

Monessen PA

Frost Advisory May 1, 12:00am until May 1, 09:00am
Click here for hazard details and duration
Frost Advisory

  • This Afternoon

    This Afternoon: A chance of showers and thunderstorms, mainly after 4pm. Partly sunny, with a high near 56. Northwest wind around 11 mph. Chance of precipitation is 30%.

    High: 56 °F

    Chance
    Showers

  • Tonight

    Tonight: A chance of showers before 7pm. Patchy frost after 5am. Otherwise, mostly cloudy during the early evening, then gradual clearing, with a low around 35. Northwest wind 5 to 7 mph becoming calm in the evening. Chance of precipitation is 30%.

    Low: 35 °F

    Chance
    Showers then
    Patchy Frost

  • Friday

    Friday: A chance of showers before 2pm, then showers likely and possibly a thunderstorm between 2pm and 4pm, then a chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 58. Light and variable wind becoming west 5 to 10 mph in the morning. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 58 °F

    Chance
    Showers then
    Showers
    Likely

  • Friday Night

    Friday Night: A chance of showers and thunderstorms, mainly before 7pm. Mostly cloudy, with a low around 36. Northwest wind around 6 mph becoming calm in the evening. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 36 °F

    Chance
    Showers then
    Mostly Cloudy

  • Saturday

    Saturday: A chance of showers and thunderstorms after 2pm. Mostly cloudy, with a high near 56. Calm wind becoming northwest 5 to 7 mph in the afternoon. Chance of precipitation is 30%.

    High: 56 °F

    Mostly Cloudy
    then Chance
    Showers

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms before 8pm. Patchy frost after 2am. Otherwise, partly cloudy, with a low around 33. Chance of precipitation is 30%.

    Low: 33 °F

    Chance
    Showers then
    Patchy Frost

  • Sunday

    Sunday: Areas of frost before 8am. Otherwise, mostly sunny, with a high near 60.

    High: 60 °F

    Areas Frost
    then Mostly
    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 42.

    Low: 42 °F

    Partly Cloudy

  • Monday

    Monday: A chance of showers after 2pm. Partly sunny, with a high near 69. Chance of precipitation is 40%.

    High: 69 °F

    Mostly Sunny
    then Chance
    Showers

Detailed Forecast

This Afternoon
A chance of showers and thunderstorms, mainly after 4pm. Partly sunny, with a high near 56. Northwest wind around 11 mph. Chance of precipitation is 30%.
Tonight
A chance of showers before 7pm. Patchy frost after 5am. Otherwise, mostly cloudy during the early evening, then gradual clearing, with a low around 35. Northwest wind 5 to 7 mph becoming calm in the evening. Chance of precipitation is 30%.
Friday
A chance of showers before 2pm, then showers likely and possibly a thunderstorm between 2pm and 4pm, then a chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 58. Light and variable wind becoming west 5 to 10 mph in the morning. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday Night
A chance of showers and thunderstorms, mainly before 7pm. Mostly cloudy, with a low around 36. Northwest wind around 6 mph becoming calm in the evening. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday
A chance of showers and thunderstorms after 2pm. Mostly cloudy, with a high near 56. Calm wind becoming northwest 5 to 7 mph in the afternoon. Chance of precipitation is 30%.
Saturday Night
A chance of showers and thunderstorms before 8pm. Patchy frost after 2am. Otherwise, partly cloudy, with a low around 33. Chance of precipitation is 30%.
Sunday
Areas of frost before 8am. Otherwise, mostly sunny, with a high near 60.
Sunday Night
Partly cloudy, with a low around 42.
Monday
A chance of showers after 2pm. Partly sunny, with a high near 69. Chance of precipitation is 40%.
Monday Night
A chance of showers. Mostly cloudy, with a low around 54. Chance of precipitation is 40%.
Tuesday
A chance of showers. Partly sunny, with a high near 75. Breezy. Chance of precipitation is 40%.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 55. Chance of precipitation is 50%.
Wednesday
Showers likely. Mostly cloudy, with a high near 69. Chance of precipitation is 70%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Monessen PA
 40.16°N 79.88°W (Elev. 801 ft)
Last Update:
2:26 pm EDT Apr 30, 2026
Forecast Valid:
3pm EDT Apr 30, 2026-6pm EDT May 6, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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