Utah County (American Fork)
September
Weather in Utah County, Utah for September 2026
Your guide to Utah County weather in September - trends and predictions
In general, the average temperature in Utah County at the beginning of September is 31 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 26 °F by the end of September.
Precipitation in Utah County during September is a rare event, with an average of fewer than 2 rainy days.
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Temperatures
Rain 🌧️
More
29
Dry days
1
Rainy days
0
Snow days
27°/9°
Temperatures
15 km/h
Avg max wind
44 %
Avg humidity
Utah County Weather September
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Temperatures trend during September in Utah County
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September weather in Utah County day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Sunny | 33° /10° | 0 mm | 9 | |
| Sept. 2 | Sunny | 34° /10° | 0 mm | 9 | |
| Sept. 3 | Sunny | 32° /11° | 0 mm | 9 | |
| Sept. 4 |  Overcast | 32° /11° | 0 mm | 9 | |
| Sept. 5 |  Partly cloudy | 30° /14° | 0 mm | 9 | |
| Sept. 6 |  Cloudy | 28° /12° | 0 mm | 9 | |
| Sept. 7 | Sunny | 28° /15° | 0 mm | 8 | |
| Sept. 8 | Sunny | 28° /10° | 0 mm | 8 | |
| Sept. 9 | Cloudy | 27° /14° | 0 mm | 9 | |
| Sept. 10 | Sunny | 30° /12° | 0 mm | 8 | |
| Sept. 11 | Partly cloudy | 27° /12° | 0 mm | 8 | |
| Sept. 12 | Overcast | 25° /7° | 0 mm | 8 | |
| Sept. 13 | Sunny | 23° /5° | 0 mm | 8 | |
| Sept. 14 | Sunny | 28° /7° | 0 mm | 8 | |
| Sept. 15 | Partly cloudy | 25° /9° | 0 mm | 8 | |
| Sept. 16 | Sunny | 26° /8° | 0 mm | 7 | |
| Sept. 17 | Sunny | 23° /4° | 0 mm | 7 | |
| Sept. 18 | Sunny | 25° /4° | 0 mm | 7 | |
| Sept. 19 | Overcast | 27° /8° | 0 mm | 7 | |
| Sept. 20 | Partly cloudy | 25° /10° | 0 mm | 7 | |
| Sept. 21 | Overcast | 25° /15° | 0 mm | 6 | |
| Sept. 22 |  Patchy rain possible | 20° /9° | 0.4 mm | 6 | |
| Sept. 23 | Sunny | 23° /2° | 0 mm | 6 | |
| Sept. 24 | Sunny | 26° /4° | 0 mm | 6 | |
| Sept. 25 | Sunny | 29° /6° | 0 mm | 6 | |
| Sept. 26 |  Thundery outbreaks possible | 27° /11° | 0 mm | 6 | |
| Sept. 27 | Sunny | 28° /8° | 0 mm | 6 | |
| Sept. 28 | Sunny | 24° /9° | 0 mm | 6 | |
| Sept. 29 | Sunny | 25° /12° | 0 mm | 6 | |
| Sept. 30 | Thundery outbreaks possible | 23° /13° | 0 mm | 6 | |
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Important Notice
Our weather forecast for Utah 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 Utah County forecast closer to your planned date for the most up-to-date weather information.
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Utah County in September - FAQ
What are the expected maximum and minimum temperatures in Utah County during September?
Enjoy moderate daytime temperatures of up to 27° and cooler nights around 9°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Utah County during September?
Rainfall in Utah County during September is rare to nonexistent, with the total expected rainfall being less than 10 mm and approximately 1 days seeing any precipitation. Planning without the concern for rain is generally straightforward during this very dry period.
What are the typical wind conditions in Utah County during September?
The average wind speed in Utah County during September is 15 km/h, suggesting breezy to windy conditions, depending on your activities.
UV exposure in Utah County during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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