Dangerous Heat and Possible Flooding This Week
Hot temperatures and high humidity are forecast to continue across much of east Texas into the mid-Mississippi Valley through this week. Heavy to excessive rainfall occurring at times through Friday could bring areas of flooding across parts of the central Plains into the upper Midwest and Four Corners states. Read More >
Current conditions at
Chester County Airport (KMQS)
Lat: 39.98°NLon: 75.87°WElev: 659ft.
Fair
67°F
19°C
| Humidity | 65% |
| Wind Speed | Vrbl 5 mph |
| Barometer | 30.39 in |
| Dewpoint | 55°F (13°C) |
| Visibility | 10.00 mi |
| Last update | 15 Sep 11:15 am EDT |
Extended Forecast for
Downingtown PA
Today
High: 74 °F
Sunny
Tonight
Low: 54 °F
Mostly Clear
Wednesday
High: 81 °F
Sunny
Wednesday Night
Low: 62 °F
Mostly Clear
Thursday
High: 84 °F
Mostly Sunny
Thursday Night
Low: 66 °F
Partly Cloudy
Friday
High: 82 °F
Mostly Sunny
Friday Night
Low: 59 °F
Partly Cloudy
Saturday
High: 76 °F
Mostly Sunny
Detailed Forecast
Today
Sunny, with a high near 74. South wind around 5 mph.
Tonight
Mostly clear, with a low around 54. Calm wind.
Wednesday
Sunny, with a high near 81. Calm wind becoming southwest around 5 mph in the afternoon.
Wednesday Night
Mostly clear, with a low around 62. Calm wind.
Thursday
Mostly sunny, with a high near 84. Calm wind becoming southwest around 5 mph in the afternoon.
Thursday Night
Partly cloudy, with a low around 66.
Friday
Mostly sunny, with a high near 82.
Friday Night
Partly cloudy, with a low around 59.
Saturday
Mostly sunny, with a high near 76.
Saturday Night
Mostly cloudy, with a low around 62.
Sunday
A chance of showers. Mostly cloudy, with a high near 81. Chance of precipitation is 50%.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 62. Chance of precipitation is 50%.
Monday
A chance of showers. Mostly cloudy, with a high near 75. Chance of precipitation is 50%.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Downingtown PA
40.02°N 75.7°W (Elev. 338 ft)
40.02°N 75.7°W (Elev. 338 ft)
4:08 am EDT Sep 15, 2026
11am EDT Sep 15, 2026-6pm EDT Sep 21, 2026
Additional Resources
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