Grand County (Moab)
September
Weather in Grand County, Utah for September 2026
Your guide to Grand County weather in September - trends and predictions
In general, the average temperature in Grand County at the beginning of September is 31.3 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 27.1 °F by the end of September.
Precipitation in Grand County during September is a rare event, with an average of fewer than 2 rainy days.
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Temperatures
Rain 🌧️
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30
Dry days
0
Rainy days
0
Snow days
29°/16°
Temperatures
20 km/h
Avg max wind
28 %
Avg humidity
Grand County Weather September
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Temperatures trend during September in Grand County
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September weather in Grand County day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Partly cloudy | 32° /16° | 0 mm | 8 | |
| Sept. 2 |  Cloudy | 32° /17° | 0 mm | 8 | |
| Sept. 3 |  Sunny | 33° /18° | 0 mm | 8 | |
| Sept. 4 | Sunny | 32° /18° | 0 mm | 8 | |
| Sept. 5 | Sunny | 30° /17° | 0 mm | 7 | |
| Sept. 6 | Sunny | 29° /16° | 0 mm | 7 | |
| Sept. 7 | Sunny | 31° /16° | 0 mm | 8 | |
| Sept. 8 | Sunny | 31° /16° | 0 mm | 8 | |
| Sept. 9 | Partly cloudy | 31° /16° | 0 mm | 8 | |
| Sept. 10 | Sunny | 30° /16° | 0 mm | 8 | |
| Sept. 11 | Sunny | 30° /17° | 0 mm | 8 | |
| Sept. 12 | Sunny | 28° /16° | 0 mm | 7 | |
| Sept. 13 | Sunny | 25° /13° | 0 mm | 6 | |
| Sept. 14 | Sunny | 27° /11° | 0 mm | 7 | |
| Sept. 15 | Cloudy | 29° /14° | 0 mm | 7 | |
| Sept. 16 |  Patchy rain possible | 28° /15° | 0.2 mm | 7 | |
| Sept. 17 |  Overcast | 24° /13° | 0 mm | 6 | |
| Sept. 18 | Cloudy | 24° /9° | 0 mm | 6 | |
| Sept. 19 | Sunny | 27° /11° | 0 mm | 7 | |
| Sept. 20 | Sunny | 28° /13° | 0 mm | 7 | |
| Sept. 21 | Cloudy | 25° /13° | 0.1 mm | 6 | |
| Sept. 22 | Sunny | 24° /13° | 0 mm | 6 | |
| Sept. 23 | Partly cloudy | 23° /10° | 0 mm | 7 | |
| Sept. 24 | Partly cloudy | 25° /11° | 0 mm | 7 | |
| Sept. 25 | Sunny | 28° /11° | 0 mm | 7 | |
| Sept. 26 | Sunny | 28° /12° | 0 mm | 7 | |
| Sept. 27 | Sunny | 27° /13° | 0 mm | 7 | |
| Sept. 28 | Sunny | 27° /13° | 1.7 mm | 7 | |
| Sept. 29 | Sunny | 27° /14° | 0 mm | 7 | |
| Sept. 30 | Sunny | 28° /13° | 0 mm | 7 | |
| Next | |||||
Important Notice
Our weather forecast for Grand 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 Grand County forecast closer to your planned date for the most up-to-date weather information.
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Grand County in September - FAQ
What are the expected maximum and minimum temperatures in Grand County during September?
During September, expect a variety of temperatures with highs around 29° and lows near 16°, suitable for diverse activities and preferences.
How much rainfall should be expected in Grand County during September?
Rainfall in Grand County during September is rare to nonexistent, with the total expected rainfall being less than 10 mm and approximately 0 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 Grand County during September?
The average wind speed in Grand County during September is 20 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Grand County
Explore the daily rainfall trends and prepare for Grand Countys September weather 💧
UV exposure in Grand County during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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Where is Grand County?Get accurate weather forecasts for Grand County, located at latitude 38.573 and longitude -109.55. Stay updated with localized weather information tailored for Grand County.
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