Glen Mills (PA)
September
Weather in Glen Mills, Pennsylvania for September 2026
Your guide to Glen Mills weather in September - trends and predictions
So far, September 2026 in Glen Mills is slightly warmer than the historical average by 1.9 °F.
The forecast for the next days in Glen Mills predicts temperatures to be around 20 °F, close to the historical average.
In general, the average temperature in Glen Mills at the beginning of September is 26.6 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 20.7 °F by the end of September.
The climate of Glen Mills in September is notably wet, with an average of 13 rainy days, and a total of 247.5 mm of precipitation.
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Temperatures
Rain 🌧️
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17
Dry days
13
Rainy days
0
Snow days
24°/16°
Temperatures
14 km/h
Avg max wind
73 %
Avg humidity
Glen Mills Weather September
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Temperatures trend during September in Glen Mills
See the weather trend as well as the moving average line
September weather in Glen Mills day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Light rain shower | 29° /19° | 1 mm | 6 | |
| Sept. 2 |  Overcast | 25° /17° | 1.3 mm | 4 | |
| Sept. 3 |  Sunny | 25° /15° | 8.1 mm | 4 | |
| Sept. 4 | Overcast | 28° /16° | 0.5 mm | 6 | |
| Sept. 5 |  Partly cloudy | 29° /17° | 16.6 mm | 6 | |
| Sept. 6 | Light rain shower | 27° /17° | 4.4 mm | 7 | |
| Sept. 7 |  Fog | 23° /14° | 27.5 mm | 6 | |
| Sept. 8 | Sunny | 25° /11° | 0 mm | 7 | |
| Sept. 9 | Overcast | 26° /14° | 0 mm | 5 | |
| Sept. 10 | Overcast | 26° /16° | 0 mm | 5 | |
| Sept. 11 | Sunny | 27° /16° | 0.3 mm | 5 | |
| Sept. 12 | Sunny | 27° /15° | 0 mm | 6 | |
| Sept. 13 | Partly cloudy | 26° /16° | 5.2 mm | 5 | |
| Sept. 14 | Partly cloudy | 27° /17° | 0.1 mm | 7 | |
| Sept. 15 | Partly cloudy | 26° /15° | 0 mm | 7 | |
| Sept. 16 | Overcast | 25° /14° | 0 mm | 6 | |
| Sept. 17 | Overcast | 23° /16° | 3 mm | 4 | |
| Sept. 18 | Mist | 24° /17° | 0 mm | 6 | |
| Sept. 19 | Sunny | 23° /14° | 0 mm | 7 | |
| Sept. 20 | Overcast | 21° /17° | 1.4 mm | 4.4 | |
| Sept. 21 | Overcast | 20° /14° | 15.1 mm | 3.6 | |
| Sept. 22 | Light rain shower | 14° /12° | 49.3 mm | 3 | |
| Sept. 23 | Patchy rain possible | 15° /11° | 0.7 mm | 4 | |
| Sept. 24 | Patchy rain possible | 14° /12° | 0.8 mm | 3 | |
| Sept. 25 | Sunny | 23° /11° | 0 mm | 6 | |
| Sept. 26 | Sunny | 20° /10° | 0 mm | 6 | |
| Sept. 27 | Sunny | 19° /9° | 0 mm | 5 | |
| Sept. 28 | Sunny | 22° /13° | 0 mm | 6 | |
| Sept. 29 | Sunny | 23° /14° | 0 mm | 6 | |
| Sept. 30 | Overcast | 24° /17° | 0 mm | 5 | |
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Important Notice
Our weather forecast for Glen Mills in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Glen Mills forecast closer to your planned date for the most up-to-date weather information.
Change Month
Glen Mills in September - FAQ
What are the expected maximum and minimum temperatures in Glen Mills during September?
During September, expect a variety of temperatures with highs around 24° and lows near 16°, suitable for diverse activities and preferences.
How much rainfall should be expected in Glen Mills during September?
Significant rainfall exceeding 247.5 mm is expected in Glen Mills during September, occurring over more than 13 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Glen Mills during September?
The average wind speed in Glen Mills during September is 14 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Glen Mills
Explore the daily rainfall trends and prepare for Glen Millss September weather 💧
Typically, Glen Mills has 13 rainy days in September with a total of 247.5 mm of rainfall.
UV exposure in Glen Mills during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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