San Juan County (Oljato-Monument Valley)
September
Weather in San Juan County, Utah for September 2027
Your guide to San Juan County weather in September - trends and predictions
In general, the average temperature in San Juan County at the beginning of September is 27.5 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 23.3 °C by the end of September.
San Juan County experiences moderate rainfall in September, with an average of 6 rainy days and a total precipitation of 58.6 mm.
Is September a good time to visit San Juan County? check out the best time to travel to San Juan County page.
✨ Is September a good time to visit San Juan County? – Ask the AI Weatherman
Temperatures
Rain 🌧️
More
24
Dry days
6
Rainy days
0
Snow days
26°/14°
Temperatures
23 km/h
Avg max wind
40 %
Avg humidity
San Juan County Weather September
Move between months or click on a day
Temperatures trend during September in San Juan County
See the weather trend as well as the moving average line
September weather in San Juan County day by day
Click on a date for more information
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Cloudy | 28° /17° | 0 mm | 9 | |
| Sept. 2 | Cloudy | 29° /18° | 0 mm | 8.9 | |
| Sept. 3 |  Thundery outbreaks possible | 28° /17° | 0 mm | 8.8 | |
| Sept. 4 |  Light rain | 28° /16° | 4.8 mm | 8 | |
| Sept. 5 |  Moderate or heavy rain shower | 26° /17° | 8.9 mm | 8 | |
| Sept. 6 | Thundery outbreaks possible | 27° /18° | 6.4 mm | 4 | |
| Sept. 7 |  Partly cloudy | 28° /16° | 0.1 mm | 8 | |
| Sept. 8 |  Sunny | 29° /16° | 0 mm | 8 | |
| Sept. 9 | Sunny | 29° /17° | 0 mm | 8 | |
| Sept. 10 | Partly cloudy | 29° /16° | 0 mm | 8 | |
| Sept. 11 |  Overcast | 28° /17° | 0.3 mm | 8 | |
| Sept. 12 | Sunny | 27° /15° | 0.2 mm | 7 | |
| Sept. 13 |  Patchy rain possible | 26° /14° | 1.5 mm | 7.9 | |
| Sept. 14 | Sunny | 26° /14° | 0.9 mm | 7 | |
| Sept. 15 | Overcast | 27° /15° | 0.6 mm | 6 | |
| Sept. 16 | Patchy rain possible | 25° /15° | 1.3 mm | 5 | |
| Sept. 17 | Patchy rain possible | 23° /14° | 1.6 mm | 5 | |
| Sept. 18 | Sunny | 24° /11° | 0.2 mm | 7 | |
| Sept. 19 | Sunny | 25° /12° | 0 mm | 7 | |
| Sept. 20 | Patchy rain possible | 25° /12° | 1.2 mm | 7 | |
| Sept. 21 | Patchy rain possible | 23° /12° | 2.1 mm | 6 | |
| Sept. 22 | Patchy rain possible | 23° /11° | 0.2 mm | 5 | |
| Sept. 23 | Sunny | 23° /12° | 0.2 mm | 4 | |
| Sept. 24 | Sunny | 23° /11° | 0 mm | 5 | |
| Sept. 25 | Sunny | 26° /13° | 0.4 mm | 6 | |
| Sept. 26 | Light rain | 25° /13° | 8.6 mm | 6 | |
| Sept. 27 | Light rain | 24° /14° | 4.7 mm | 4 | |
| Sept. 28 | Moderate or heavy rain shower | 21° /13° | 7.4 mm | 4 | |
| Sept. 29 | Cloudy | 22° /13° | 0.5 mm | 5 | |
| Sept. 30 | Light rain | 22° /12° | 6.7 mm | 5 | |
| Next | |||||
Important Notice
Our weather forecast for San Juan 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 San Juan County forecast closer to your planned date for the most up-to-date weather information.
Change Month
San Juan County in September - FAQ
What are the expected maximum and minimum temperatures in San Juan County during September?
Enjoy moderate daytime temperatures of up to 26° and cooler nights around 14°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in San Juan County during September?
Moderate rainfall is anticipated in San Juan County during September, with a total of 58.6 mm spread over approximately 6 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in San Juan County during September?
The average wind speed in San Juan County during September is 23 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in San Juan County
Explore the daily rainfall trends and prepare for San Juan Countys September weather 💧
Typically, San Juan County has 6 rainy days in September with a total of 58.6 mm of rainfall.
UV exposure in San Juan County during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
Top locations in San Juan County
Select a location for an accurate weather forecast
More Locations Quick links
More San Juan County weather pages
You are here
Found a mistake?
We appreciate your attention to details. Tell us here.