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

Atmospheric River Continues Areas of Heavy Rain and Snow for California This Weekend

An atmospheric river will continue to bring gusty winds, moderate to heavy rainfall, and potential flooding to southern California and the southern Great Basin through Sunday. Periods of heavy snow will continue as well above 7,000 feet over the Sierra Nevada mountains associated with this atmospheric river. Read More >

Current conditions at

Chester County Airport (KMQS)

Lat: 39.98°NLon: 75.87°WElev: 659ft.

Overcast

48°F

9°C

Humidity 54%
Wind Speed Vrbl 5 mph
Barometer 29.75 in
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Wind Chill46°F (8°C)
Last update 15 Nov 12:35 pm EST
Extended Forecast for

3 Miles NNE Chatham PA

  • This Afternoon

    This Afternoon: Isolated showers after 3pm. Cloudy, with a high near 58. South wind around 5 mph. Chance of precipitation is 20%.

    High: 58 °F

    Isolated
    Showers

  • Tonight

    Tonight: Showers and thunderstorms likely before 10pm, then scattered showers. Mostly cloudy, with a low around 47. South wind 5 to 15 mph becoming west after midnight. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 47 °F

    Showers
    Likely then
    Scattered
    Showers

  • Sunday

    Sunday: Mostly sunny, with a temperature rising to near 53 by 9am, then falling to around 45 during the remainder of the day. Breezy, with a west wind 15 to 25 mph, with gusts as high as 45 mph.

    High: 53 °F⇓

    Mostly Sunny
    and Breezy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 34. Breezy, with a west wind 15 to 20 mph, with gusts as high as 35 mph.

    Low: 34 °F

    Partly Cloudy
    and Breezy
    then Mostly
    Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 45. Breezy, with a northwest wind 15 to 20 mph, with gusts as high as 40 mph.

    High: 45 °F

    Mostly Sunny
    and Breezy

  • Monday Night

    Monday Night: Mostly clear, with a low around 29.

    Low: 29 °F

    Mostly Clear

  • Tuesday

    Tuesday: Partly sunny, with a high near 45.

    High: 45 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A chance of rain. Mostly cloudy, with a low around 34. Chance of precipitation is 40%.

    Low: 34 °F

    Chance Rain

  • Wednesday

    Wednesday: Partly sunny, with a high near 49.

    High: 49 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Isolated showers after 3pm. Cloudy, with a high near 58. South wind around 5 mph. Chance of precipitation is 20%.
Tonight
Showers and thunderstorms likely before 10pm, then scattered showers. Mostly cloudy, with a low around 47. South wind 5 to 15 mph becoming west after midnight. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday
Mostly sunny, with a temperature rising to near 53 by 9am, then falling to around 45 during the remainder of the day. Breezy, with a west wind 15 to 25 mph, with gusts as high as 45 mph.
Sunday Night
Mostly cloudy, with a low around 34. Breezy, with a west wind 15 to 20 mph, with gusts as high as 35 mph.
Monday
Mostly sunny, with a high near 45. Breezy, with a northwest wind 15 to 20 mph, with gusts as high as 40 mph.
Monday Night
Mostly clear, with a low around 29.
Tuesday
Partly sunny, with a high near 45.
Tuesday Night
A chance of rain. Mostly cloudy, with a low around 34. Chance of precipitation is 40%.
Wednesday
Partly sunny, with a high near 49.
Wednesday Night
Mostly cloudy, with a low around 31.
Thursday
Partly sunny, with a high near 50.
Thursday Night
A chance of rain. Mostly cloudy, with a low around 40. Chance of precipitation is 40%.
Friday
A chance of rain. Mostly cloudy, with a high near 58. Chance of precipitation is 40%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNE Chatham PA
 39.87°N 75.81°W (Elev. 427 ft)
Last Update:
12:43 pm EST Nov 15, 2025
Forecast Valid:
12pm EST Nov 15, 2025-6pm EST Nov 21, 2025
 
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