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

Extreme Heat and Tropical Storm Bertha Impacts

Dangerous heat will expand from the Gulf Coast into the Southern Plains and Desert Southwest through week's end. Additional extreme heat impacting the Pacific Northwest will shift to the northern Plains by the weekend. Tropical Storm Bertha is expected to continue to impact portions of the northwestern Gulf Coast from south central Louisiana to the upper Texas coast today. Read More >

Current conditions at

Chester County Airport (KMQS)

Lat: 39.98°NLon: 75.87°WElev: 659ft.

A Few Clouds

73°F

23°C

Humidity 44%
Wind Speed Calm
Barometer 30.16 in
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Last update 23 Jul 12:35 pm EDT
Extended Forecast for

2 Miles SE Downingtown PA

  • This Afternoon

    This Afternoon: Sunny, with a high near 79. North wind around 5 mph.

    High: 79 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 59. Calm wind.

    Low: 59 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 82. Calm wind becoming east around 5 mph in the afternoon.

    High: 82 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 59. South wind around 5 mph becoming calm in the evening.

    Low: 59 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 82. Calm wind becoming east around 5 mph in the afternoon.

    High: 82 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 61.

    Low: 61 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 82.

    High: 82 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 63.

    Low: 63 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 85.

    High: 85 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 79. North wind around 5 mph.
Tonight
Mostly clear, with a low around 59. Calm wind.
Friday
Mostly sunny, with a high near 82. Calm wind becoming east around 5 mph in the afternoon.
Friday Night
Partly cloudy, with a low around 59. South wind around 5 mph becoming calm in the evening.
Saturday
Sunny, with a high near 82. Calm wind becoming east around 5 mph in the afternoon.
Saturday Night
Partly cloudy, with a low around 61.
Sunday
Sunny, with a high near 82.
Sunday Night
Partly cloudy, with a low around 63.
Monday
Mostly sunny, with a high near 85.
Monday Night
A chance of showers after 8pm. Mostly cloudy, with a low around 66. Chance of precipitation is 40%.
Tuesday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 84. Chance of precipitation is 60%.
Tuesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 65. Chance of precipitation is 60%.
Wednesday
A chance of showers. Partly sunny, with a high near 81. Chance of precipitation is 30%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SE Downingtown PA
 39.99°N 75.67°W (Elev. 348 ft)
Last Update:
6:14 am EDT Jul 23, 2026
Forecast Valid:
12pm EDT Jul 23, 2026-6pm EDT Jul 29, 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