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

Heat the Southwest; Fire Weather in the Central U.S.; Kona Low Impacting Hawaii

A rare March heat wave is ongoing with much above-normal temperatures over the Southwest U.S. through this weekend. Periods of critical fire weather will persist from the central Rockies to the central and southern Plains through the weekend as gusty winds and low relative humidity continue. A Kona low will continue to bring several rounds of moderate to heavy rainfall to Hawaii through Sunday. Read More >

Current conditions at

Chester County Airport (KMQS)

Lat: 39.98°NLon: 75.87°WElev: 659ft.

A Few Clouds

43°F

6°C

Humidity 97%
Wind Speed S 5 mph
Barometer 29.86 in
Dewpoint 42°F (6°C)
Visibility 8.00 mi
Wind Chill40°F (4°C)
Last update 22 Mar 6:55 am EDT
Extended Forecast for

Atglen PA

  • Today

    Today: Partly sunny, with a high near 69. South wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 69 °F

    Partly Sunny

  • Tonight

    Tonight: Rain and thunderstorms before 4am, then rain likely. Low around 44. Southwest wind 5 to 10 mph becoming north in the evening. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 44 °F

    Showers
    Likely then
    Rain

  • Monday

    Monday: A chance of rain, mainly before 8am. Cloudy through mid morning, then gradual clearing, with a high near 48. Breezy, with a northwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 48 °F

    Chance Rain
    and Breezy

  • Monday Night

    Monday Night: Mostly clear, with a low around 28. North wind 10 to 15 mph.

    Low: 28 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 46. Northwest wind around 5 mph becoming west in the afternoon.

    High: 46 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 32.

    Low: 32 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 53.

    High: 53 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: A chance of rain after 2am. Mostly cloudy, with a low around 40. Chance of precipitation is 30%.

    Low: 40 °F

    Mostly Cloudy
    then Chance
    Rain

  • Thursday

    Thursday: A chance of rain before 2pm. Mostly cloudy, with a high near 59. Chance of precipitation is 30%.

    High: 59 °F

    Chance Rain

Detailed Forecast

Today
Partly sunny, with a high near 69. South wind 5 to 10 mph, with gusts as high as 20 mph.
Tonight
Rain and thunderstorms before 4am, then rain likely. Low around 44. Southwest wind 5 to 10 mph becoming north in the evening. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Monday
A chance of rain, mainly before 8am. Cloudy through mid morning, then gradual clearing, with a high near 48. Breezy, with a northwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Monday Night
Mostly clear, with a low around 28. North wind 10 to 15 mph.
Tuesday
Mostly sunny, with a high near 46. Northwest wind around 5 mph becoming west in the afternoon.
Tuesday Night
Mostly cloudy, with a low around 32.
Wednesday
Mostly cloudy, with a high near 53.
Wednesday Night
A chance of rain after 2am. Mostly cloudy, with a low around 40. Chance of precipitation is 30%.
Thursday
A chance of rain before 2pm. Mostly cloudy, with a high near 59. Chance of precipitation is 30%.
Thursday Night
Rain likely after 8pm. Mostly cloudy, with a low around 43. Chance of precipitation is 60%.
Friday
Partly sunny, with a high near 49.
Friday Night
Partly cloudy, with a low around 25.
Saturday
Sunny, with a high near 43.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Atglen PA
 39.94°N 75.97°W (Elev. 577 ft)
Last Update:
5:07 am EDT Mar 22, 2026
Forecast Valid:
7am EDT Mar 22, 2026-6pm EDT Mar 28, 2026
 
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