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

Briefing for Flash Flood and Severe Storm Risks through Tonight

Potentially significant flash flooding is possible this afternoon into tonight. Some isolated severe thunderstorms are also possible. See this briefing for details on these hazards. Read More >

Hazardous Weather Conditions

Current conditions at

Chester County Airport (KMQS)

Lat: 39.98°NLon: 75.87°WElev: 659ft.

Light Drizzle

73°F

23°C

Humidity 100%
Wind Speed N 8 mph
Barometer 29.97 in
Dewpoint 73°F (23°C)
Visibility 9.00 mi
Last update 31 Jul 2:55 pm EDT
Extended Forecast for

4 Miles NNW Pomeroy PA

Flood Watch until August 1, 06:00am
Severe T-storm Watch until July 31, 08:00pm
Click here for hazard details and duration
Flood Watch
Severe T-storm Watch
  •  
    Flood Watch until August 1, 06:00am
    Severe T-storm Watch until July 31, 08:00pm

    NOW: Multiple hazards in effect

    Click HERE for Details

  • This Afternoon

    High: 87 °F

    Severe
    Thunderstorms

  • Tonight

    Tonight: Showers and thunderstorms likely before 4am, then a chance of showers. Some of the storms could be severe and produce heavy rainfall. Cloudy, with a low around 63. Northeast wind 10 to 15 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 63 °F

    Severe
    Thunderstorms
    then Chance
    Showers

  • Friday

    Friday: A slight chance of showers before 9am. Mostly cloudy, with a high near 75. Northeast wind 10 to 15 mph. Chance of precipitation is 20%.

    High: 75 °F

    Slight Chance
    Showers then
    Partly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 58. North wind around 5 mph.

    Low: 58 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 79. North wind 5 to 10 mph.

    High: 79 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 57.

    Low: 57 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 82.

    High: 82 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 59.

    Low: 59 °F

    Partly Cloudy

Detailed Forecast

This Afternoon
Showers and thunderstorms. Some of the storms could be severe. High near 87. Northeast wind around 5 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Tonight
Showers and thunderstorms likely before 4am, then a chance of showers. Some of the storms could be severe and produce heavy rainfall. Cloudy, with a low around 63. Northeast wind 10 to 15 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.
Friday
A slight chance of showers before 9am. Mostly cloudy, with a high near 75. Northeast wind 10 to 15 mph. Chance of precipitation is 20%.
Friday Night
Mostly clear, with a low around 58. North wind around 5 mph.
Saturday
Sunny, with a high near 79. North wind 5 to 10 mph.
Saturday Night
Mostly clear, with a low around 57.
Sunday
Sunny, with a high near 82.
Sunday Night
Partly cloudy, with a low around 59.
Monday
Sunny, with a high near 84.
Monday Night
Partly cloudy, with a low around 61.
Tuesday
Mostly sunny, with a high near 85.
Tuesday Night
Mostly cloudy, with a low around 64.
Wednesday
Partly sunny, with a high near 83.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 64. Chance of precipitation is 30%.
Thursday
A chance of showers. Partly sunny, with a high near 83.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles NNW Pomeroy PA
 40.02°N 75.96°W (Elev. 495 ft)
Last Update:
1:34 pm EDT Jul 31, 2025
Forecast Valid:
3pm EDT Jul 31, 2025-6pm EDT Aug 7, 2025
 
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