State College (PA)
September
Weather in State College, Pennsylvania for September 2026
Your guide to State College weather in September - trends and predictions
So far, September 2026 in State College shows a warmer trend than usual by 2.8 °F.
Expect cooler weather in the next days in State College with the forecast suggesting a temperature of 20.9 °F, lower than the historical average.
In general, the average temperature in State College at the beginning of September is 24.9 °F. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 21.9 °F by the end of September.
With an average of 4 rainy days, State College experiences minimal rainfall in September.
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Temperatures
Rain 🌧️
More
26
Dry days
4
Rainy days
0
Snow days
22°/13°
Temperatures
10 km/h
Avg max wind
76 %
Avg humidity
State College Weather September
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Temperatures trend during September in State College
See the weather trend as well as the moving average line
September weather in State College day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Overcast | 28° /15° | 5 mm | 6 | |
| Sept. 2 | Overcast | 26° /16° | 102.5 mm | 5 | |
| Sept. 3 |  Cloudy | 27° /16° | 33.5 mm | 5 | |
| Sept. 4 |  Moderate or heavy rain shower | 25° /17° | 8.7 mm | 6 | |
| Sept. 5 |  Fog | 24° /16° | 0.9 mm | 4 | |
| Sept. 6 | Mist | 23° /13° | 0 mm | 5 | |
| Sept. 7 | Mist | 21° /11° | 0 mm | 6 | |
| Sept. 8 |  Partly cloudy | 22° /8° | 0 mm | 6 | |
| Sept. 9 |  Sunny | 25° /12° | 0.2 mm | 5 | |
| Sept. 10 | Fog | 20° /5° | 0 mm | 6 | |
| Sept. 11 | Overcast | 25° /17° | 1 mm | 6.4 | |
| Sept. 12 | Overcast | 22° /17° | 6.9 mm | 1.8 | |
| Sept. 13 | Fog | 26° /18° | 0.1 mm | 6.3 | |
| Sept. 14 | Overcast | 22° /15° | 0.3 mm | 6.4 | |
| Sept. 15 | Overcast | 24° /13° | 0 mm | 6 | |
| Sept. 16 | Mist | 25° /17° | 2.1 mm | 6 | |
| Sept. 17 |  Light rain shower | 21° /14° | 11.7 mm | 5 | |
| Sept. 18 | Sunny | 18° /10° | 0 mm | 5 | |
| Sept. 19 | Sunny | 21° /11° | 0 mm | 6 | |
| Sept. 20 | Sunny | 20° /12° | 0.1 mm | 5 | |
| Sept. 21 | Overcast | 15° /11° | 3.1 mm | 3 | |
| Sept. 22 | Light rain shower | 17° /11° | 10.2 mm | 4 | |
| Sept. 23 | Light rain shower | 16° /11° | 3.2 mm | 3 | |
| Sept. 24 | Fog | 22° /16° | 0 mm | 1 | |
| Sept. 25 |  Heavy rain at times | 20° /17° | 17.1 mm | 1 | |
| Sept. 26 | Fog | 21° /14° | 0 mm | 1 | |
| Sept. 27 | Fog | 20° /9° | 0 mm | 2 | |
| Sept. 28 |  Moderate rain | 22° /13° | 25.7 mm | 4 | |
| Sept. 29 | Fog | 23° /13° | 0 mm | 4 | |
| Sept. 30 | Overcast | 25° /11° | 0 mm | 4 | |
| Next | |||||
Important Notice
Our weather forecast for State College 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 State College forecast closer to your planned date for the most up-to-date weather information.
Change Month
State College in September - FAQ
What are the expected maximum and minimum temperatures in State College during September?
Enjoy moderate daytime temperatures of up to 22° and cooler nights around 13°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in State College during September?
Significant rainfall exceeding 106.6 mm is expected in State College during September, occurring over more than 4 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in State College during September?
The average wind speed in State College during September is 10 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in State College
Explore the daily rainfall trends and prepare for State Colleges September weather 💧
Typically, State College has 4 rainy days in September with a total of 106.6 mm of rainfall.
UV exposure in State College during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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