Temperatures in September
It's hot in September in Fresno with an average temperature of 34°C. Temperatures this month range from a low of 29°C to a high of 38°C. At night, you can expect temperatures between 16°C and 21°C.
Max and Min Temperatures per Day
This chart shows the daily maximum and minimum temperatures in degrees Celsius for Fresno in September. The red line indicates the max temperatures, and the blue line shows the minimums.
Start of September
The month of September starts in Fresno with hot temperatures, averaging around 37°C during the day and nights close to 21°C. You won’t see any precipitation in the first days of the month, it’s all sunny skies. Breezy clothes like shorts or a dress, plus a hat and sunglasses, are ideal.
Mid-September
By mid-September, the average daytime temperature drops to around 35°C, with nights close to 20°C. No precipitation expected during this period, so you can enjoy plenty of sunshine.
End of September
By the end of September, the average daytime temperature in Fresno will be around 32°C, with nights close to 18°C. Barely any chance of precipitation. The weather will mostly be dry with lots of sunshine.
As it gets cooler in the evening, it’s best to wear layers.
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Precipitation in September
According to weather history, there is only 4,7 mm of precipitation in September. The wind speed is around 4 Bft, mostly coming from the West.
The average chance of precipitation is only 2% in September.
Precipitation Chance
This chart shows the daily precipitation chance (in percentages) in September for Fresno. 0% means it never rained on that day in the past 10 years, and 100% means it rained every day. All values in between represent the average chance of precipitation on that day.
Fresno in September |
London | ||
|---|---|---|---|
 Average Temperature |
34°C | 20°C | |
 High Temp |
38°C | 22°C | |
| Low Temp |
29°C | 17°C | |
 Total Precipitation |
4,7 mm | 44 mm | |
| Rainy Days |
0 days | 8 days | |
August
UV index
The UV index is a maximum of 8 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.
Is September a good time to visit Fresno?
September is a great month to be in Fresno for sunny weather. You’ll get high temperatures and not too much rain this month.
Temperature records for Fresno in September
With 46°C, Fresno hit the highest temperature in the last 10 years in September 2022. The lowest daytime temperature in this month was 21°C in 2017. The extreme night temperatures ranged from a low of 10°C to a high of 28°C.
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Daily Temperature in September in Fresno
This chart shows the average daily temperatures, both day and night, for each day in September in Fresno, measured in degrees Celsius. The red line represents the maximum temperatures, while the blue line shows the minimums. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, gives an overview of the average daily temperatures during this month.
Daily Precipitation in September in Fresno
The chart below shows the average daily precipitation in September for Fresno, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are shown at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that rain is more likely. But it’s still an average, so each day can be different. Based on historical weather data for September, you can expect it to stay dry all month in Fresno.
Daily UV Index in September in Fresno
This chart shows the average daily UV index in September in Fresno, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Temperature in September in Fresno Over the Years
This chart shows the average temperature in September in Fresno, measured in degrees Celsius, over the past years.
Total Precipitation in September in Fresno Over the Years
This chart shows the average precipitation in September in Fresno, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail.
Daily climate in September for Fresno
Click on a specific day in September for detailed info on the typical weather on that day in Fresno. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in September in Fresno
Have you been to Fresno in September?
Share your weather experience in September in Fresno.
Average Weather in Fresno by Month
Click on a month below to see detailed weather info for Fresno. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
