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

Chester County Airport (KMQS)

Lat: 39.98°NLon: 75.87°WElev: 659ft.

62°F

17°C

Humidity 31%
Wind Speed Vrbl 5 mph
Barometer 29.95 in
Dewpoint 31°F (-1°C)
Visibility 10.00 mi
Last update 11 Nov 11:15 am EST
Extended Forecast for

Saint Peters PA

  • Veterans Day

    Veterans Day: Mostly sunny, with a high near 63. South wind around 5 mph.

    High: 63 °F

    Mostly Sunny

  • Tonight

    Tonight: A chance of rain, mainly after 5am. Mostly cloudy, with a low around 45. Southeast wind around 5 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 45 °F

    Mostly Cloudy
    then Chance
    Rain

  • Thursday

    Thursday: Rain, mainly before 3pm. High near 59. East wind around 5 mph becoming west in the morning. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 59 °F

    Rain

  • Thursday Night

    Thursday Night: A chance of rain. Mostly cloudy, with a low around 36. Northwest wind 5 to 15 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 36 °F

    Chance Rain

  • Friday

    Friday: A chance of rain before 1pm. Mostly cloudy, with a high near 46. Northwest wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

    High: 46 °F

    Chance Rain

  • Friday Night

    Friday Night: A slight chance of rain after 1am, mixing with snow after 4am. Mostly cloudy, with a low around 32. Chance of precipitation is 20%.

    Low: 32 °F

    Mostly Cloudy
    then Slight
    Chance
    Rain/Snow

  • Saturday

    Saturday: Partly sunny, with a high near 46.

    High: 46 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 32.

    Low: 32 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 48.

    High: 48 °F

    Mostly Sunny

Detailed Forecast

Veterans Day
Mostly sunny, with a high near 63. South wind around 5 mph.
Tonight
A chance of rain, mainly after 5am. Mostly cloudy, with a low around 45. Southeast wind around 5 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Thursday
Rain, mainly before 3pm. High near 59. East wind around 5 mph becoming west in the morning. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday Night
A chance of rain. Mostly cloudy, with a low around 36. Northwest wind 5 to 15 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.
Friday
A chance of rain before 1pm. Mostly cloudy, with a high near 46. Northwest wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
A slight chance of rain after 1am, mixing with snow after 4am. Mostly cloudy, with a low around 32. Chance of precipitation is 20%.
Saturday
Partly sunny, with a high near 46.
Saturday Night
Partly cloudy, with a low around 32.
Sunday
Mostly sunny, with a high near 48.
Sunday Night
Mostly clear, with a low around 31.
Monday
Sunny, with a high near 49.
Monday Night
Mostly clear, with a low around 29.
Tuesday
Mostly sunny, with a high near 51.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Saint Peters PA
 40.16°N 75.79°W (Elev. 597 ft)
Last Update:
9:33 am EST Nov 11, 2026
Forecast Valid:
11am EST Nov 11, 2026-6pm EST Nov 17, 2026
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation