Fresno County (Fresno)
September
Weather in Fresno County, California for September 2026
Your guide to Fresno County weather in September - trends and predictions
Until now, September 2026 in Fresno County is slightly cooler than the historical average by 1.4 °F.
The forecast for the next days in Fresno County predicts temperatures to be around 34 °F, close to the historical average.
In general, the average temperature in Fresno County at the beginning of September is 36.4 °F. As the month progressed, temperatures tended to moderately fall, reaching an average of 35 °F by the end of September.
Precipitation in Fresno County during September is a rare event, with an average of fewer than 2 rainy days.
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Temperatures
Rain 🌧️
More
30
Dry days
0
Rainy days
0
Snow days
34°/18°
Temperatures
16 km/h
Avg max wind
37 %
Avg humidity
Fresno County Weather September
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Temperatures trend during September in Fresno County
See the weather trend as well as the moving average line
September weather in Fresno County day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Sunny | 37° /19° | 0 mm | 10 | |
| Sept. 2 | Sunny | 36° /18° | 0 mm | 9 | |
| Sept. 3 | Sunny | 35° /19° | 0 mm | 9 | |
| Sept. 4 | Sunny | 36° /19° | 0 mm | 9 | |
| Sept. 5 | Sunny | 37° /19° | 0 mm | 9 | |
| Sept. 6 | Sunny | 37° /19° | 0 mm | 9 | |
| Sept. 7 | Sunny | 37° /18° | 0 mm | 9 | |
| Sept. 8 | Sunny | 37° /19° | 0 mm | 8 | |
| Sept. 9 |  Patchy rain possible | 37° /20° | 0.4 mm | 7 | |
| Sept. 10 | Sunny | 36° /19° | 0 mm | 8 | |
| Sept. 11 | Sunny | 35° /18° | 0 mm | 8 | |
| Sept. 12 | Sunny | 34° /15° | 0 mm | 8 | |
| Sept. 13 | Sunny | 34° /17° | 0 mm | 8 | |
| Sept. 14 | Sunny | 34° /17° | 0 mm | 9 | |
| Sept. 15 | Sunny | 35° /19° | 0 mm | 9 | |
| Sept. 16 | Sunny | 33° /17° | 0 mm | 7 | |
| Sept. 17 |  Partly cloudy | 32° /15° | 0 mm | 8 | |
| Sept. 18 | Sunny | 30° /16° | 0 mm | 7 | |
| Sept. 19 | Sunny | 30° /16° | 0 mm | 7 | |
| Sept. 20 |  Smoky haze | 34° /22° | 0 mm | 6.4 | |
| Sept. 21 | Smoky haze | 31° /20° | 0 mm | 5.6 | |
| Sept. 22 | Smoky haze | 33° /20° | 0 mm | 6.4 | |
| Sept. 23 | Smoky haze | 36° /23° | 0 mm | 6 | |
| Sept. 24 | Smoky haze | 37° /25° | 0 mm | 9 | |
| Sept. 25 | Sunny | 35° /22° | 0 mm | 8 | |
| Sept. 26 | Sunny | 33° /21° | 0 mm | 8 | |
| Sept. 27 | Sunny | 34° /22° | 0 mm | 8 | |
| Sept. 28 | Sunny | 37° /24° | 0 mm | 9 | |
| Sept. 29 | Sunny | 36° /23° | 0 mm | 9 | |
| Sept. 30 | Sunny | 33° /23° | 0 mm | 8 | |
| Next | |||||
Important Notice
Our weather forecast for Fresno 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 Fresno County forecast closer to your planned date for the most up-to-date weather information.
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Fresno County in September - FAQ
What are the expected maximum and minimum temperatures in Fresno County during September?
Expect warm days with temperatures around 34°, cooling to mild conditions of 18° after sunset. Perfect for those who enjoy warm weather.
How much rainfall should be expected in Fresno County during September?
Rainfall in Fresno 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 Fresno County during September?
The average wind speed in Fresno County during September is 16 km/h, suggesting breezy to windy conditions, depending on your activities.
UV exposure in Fresno County during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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Where is Fresno County?Get accurate weather forecasts for Fresno County, located at latitude 36.748 and longitude -119.772. Stay updated with localized weather information tailored for Fresno County.
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