Downingtown Weather Forecast
- 49
- 73
Sunny
- 53
- 75
Mostly Sunny
- 51
- 69
Partly Sunny
- 55
- 80
Mostly Sunny
- 54
- 79
Mostly Sunny
- 52
- 77
Partly Sunny
- 55
- 78
Partly Sunny
Today 8 Sep Eastern Chester
Sunny. Highs in the lower 70s. North Winds around 5 Mph.
Tonight 8 Sep Eastern Chester
Clear. Lows in the upper 40s. Northeast Winds around 5 Mph.
Downingtown Temperature Statistics
September Temperature
Chester County Airport (8.7 miles)
Lowest 1 September, 2025
53.6 °FAverage September
68.4 °FHighest 6 September, 2025
84.2 °F
Climate (2020–Present)
Chester County Airport (8.7 miles)
Average Low 2020–2025
46.1 °FAverage 2020–2025
54.6 °FAverage High 2020–2025
63.1 °F