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Weather in Fresno County for September 2025

Your guide to Fresno County weather in September - trends and predictions
  • In general, the average temperature in Fresno County at the beginning of September is 36.4 °F. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 33.7 °F by the end of September.

  • With an average of 2 rainy days, Fresno County experiences minimal rainfall in September, ensuring that most days remain pleasantly dry.

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Average dry days
28
Dry days
Average rainy days
2
Rainy days
Average snowy days
0
Snow days
Average temperatures
33°/16°
Temperatures
Average wind speed
16 km/h
Avg max wind
Average humidity
39 %
Avg humidity

Fresno County in September average weather

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Temperatures trend during September in Fresno 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 Partly cloudy
Partly cloudy
37° /21° 0 mm 9
Sept. 2 Sunny
Sunny
35° /18° 0 mm 9
Sept. 3 Overcast
Overcast
33° /19° 0 mm 8
Sept. 4 Sunny
Sunny
35° /19° 0 mm 9
Sept. 5 Sunny
Sunny
38° /20° 0 mm 9
Sept. 6 Sunny
Sunny
39° /22° 0 mm 10
Sept. 7 Sunny
Sunny
38° /21° 0 mm 10
Sept. 8 Sunny
Sunny
39° /22° 0 mm 10
Sept. 9 Patchy rain possible
Patchy rain possible
39° /22° 0.8 mm 9
Sept. 10 Sunny
Sunny
38° /20° 0 mm 9
Sept. 11 Overcast
Overcast
36° /19° 0 mm 8
Sept. 12 Sunny
Sunny
33° /15° 0 mm 9
Sept. 13 Sunny
Sunny
35° /17° 0 mm 9
Sept. 14 Sunny
Sunny
36° /19° 0 mm 9
Sept. 15 Sunny
Sunny
35° /20° 0 mm 9
Sept. 16 Sunny
Sunny
30° /17° 0 mm 8
Sept. 17 Partly cloudy
Partly cloudy
29° /13° 0 mm 8
Sept. 18 Sunny
Sunny
28° /13° 0 mm 7
Sept. 19 Sunny
Sunny
30° /14° 0 mm 7
Sept. 20 Sunny
Sunny
32° /15° 0 mm 8
Sept. 21 Cloudy
Cloudy
32° /16° 0 mm 8
Sept. 22 Overcast
Overcast
33° /15° 0 mm 8
Sept. 23 Sunny
Sunny
35° /17° 0 mm 9
Sept. 24 Partly cloudy
Partly cloudy
36° /17° 0 mm 9
Sept. 25 Sunny
Sunny
34° /17° 0 mm 9
Sept. 26 Partly cloudy
Partly cloudy
33° /14° 0 mm 9
Sept. 27 Sunny
Sunny
35° /15° 0 mm 9
Sept. 28 Sunny
Sunny
34° /16° 0 mm 9
Sept. 29 Sunny
Sunny
35° /16° 0 mm 9
Sept. 30 Patchy light rain
Patchy light rain
29° /16° 1.1 mm 7
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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.

Fresno County in September - FAQ

What are the expected maximum and minimum temperatures in Fresno County during September?
Expect warm days with temperatures around 33°, cooling to mild conditions of 16° 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 2 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.
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Location coordinates 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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