Summit County
September
Weather in Summit County for September 2025
Your guide to Summit County weather in September - trends and predictions
In general, the average temperature in Summit County at the beginning of September is 27.6 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 21.6 °F by the end of September.
Summit County sees moderate rainfall in September, averaging 9 rainy days.
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21
Dry days
9
Rainy days
0
Snow days
24°/13°
Temperatures
14 km/h
Avg max wind
74 %
Avg humidity
Summit County in September average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  26° | 2  25° | 3  28° | 4 31° | 5  31° | 6 31° | 7  21° |
| 8  22° | 9 26° | 10  25° | 11 28° | 12 26° | 13 24° | 14 25° |
| 15 26° | 16 25° | 17 21° | 18 23° | 19 21° | 20  26° | 21 27° |
| 22 27° | 23 22° | 24 19° | 25 23° | 26 23° | 27 22° | 28 20° |
| 29 23° | 30 21° |
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Temperatures trend during September in Summit County
See the weather trend as well as the moving average line
September weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 | Sunny | 26° /12° | 0 mm | 6 | |
| Sept. 2 | Cloudy | 25° /11° | 0 mm | 6 | |
| Sept. 3 | Overcast | 28° /13° | 0 mm | 7 | |
| Sept. 4 | Cloudy | 31° /15° | 0 mm | 7 | |
| Sept. 5 | Thundery outbreaks possible | 31° /15° | 0.1 mm | 7 | |
| Sept. 6 | Cloudy | 31° /17° | 7.2 mm | 7 | |
| Sept. 7 | Moderate or heavy rain shower | 21° /13° | 7.6 mm | 5 | |
| Sept. 8 | Fog | 22° /10° | 0 mm | 6 | |
| Sept. 9 | Mist | 26° /11° | 0 mm | 7 | |
| Sept. 10 | Light rain shower | 25° /14° | 2 mm | 6 | |
| Sept. 11 | Fog | 28° /12° | 0 mm | 7 | |
| Sept. 12 | Light rain shower | 26° /14° | 2.2 mm | 7 | |
| Sept. 13 | Mist | 24° /12° | 0 mm | 5 | |
| Sept. 14 | Cloudy | 25° /12° | 0 mm | 6 | |
| Sept. 15 | Mist | 26° /10° | 0 mm | 6 | |
| Sept. 16 | Mist | 25° /8° | 0 mm | 6 | |
| Sept. 17 | Mist | 21° /12° | 7.3 mm | 5 | |
| Sept. 18 | Light rain shower | 23° /11° | 0.6 mm | 6 | |
| Sept. 19 | Fog | 21° /11° | 0 mm | 5 | |
| Sept. 20 | Partly cloudy | 26° /11° | 0 mm | 7 | |
| Sept. 21 | Partly cloudy | 27° /15° | 3.4 mm | 7 | |
| Sept. 22 | Mist | 27° /13° | 0 mm | 6 | |
| Sept. 23 | Overcast | 22° /13° | 1.9 mm | 5 | |
| Sept. 24 | Patchy rain possible | 19° /14° | 0 mm | 4 | |
| Sept. 25 | Patchy rain possible | 23° /15° | 0.3 mm | 5 | |
| Sept. 26 | Overcast | 23° /15° | 0 mm | 5 | |
| Sept. 27 | Light rain shower | 22° /14° | 0.3 mm | 5 | |
| Sept. 28 | Light rain shower | 20° /14° | 2.2 mm | 5 | |
| Sept. 29 | Light rain shower | 23° /15° | 1.7 mm | 5 | |
| Sept. 30 | Fog | 21° /14° | 5.3 mm | 5 | |
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Important Notice
Our weather forecast for Summit County 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 Summit County forecast closer to your planned date for the most up-to-date weather information.
Summit County in September - FAQ
What are the expected maximum and minimum temperatures in Summit County during September?
Enjoy moderate daytime temperatures of up to 24° and cooler nights around 13°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Summit County during September?
In September, Summit County can expect light to moderate rainfall, totaling 35.8 mm across approximately 9 days. Occasional showers are possible, and planning ahead for them could be helpful.
What are the typical wind conditions in Summit County during September?
The average wind speed in Summit County during September is 14 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Summit County
Explore the daily rainfall trends and prepare for Summit Countys September weather 💧
UV exposure in Summit County during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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Where is Summit County?Get accurate weather forecasts for Summit County, located at latitude 41.081 and longitude -81.519. Stay updated with localized weather information tailored for Summit County.
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