Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
Fresno's September weather features a light decline in high-temperatures, reducing from a torrid 98.2°F (36.8°C) in August to a tropical 91.8°F (33.2°C). During September, Fresno reports a marked contrast from daily peak temperatures, with an average nighttime reading of 63.3°F (17.4°C).Humidity
In Fresno, the average relative humidity in September is 31%.Rainfall
In Fresno, in September, during 2.4 rainfall days, 0.16" (4mm) of precipitation is typically accumulated. In Fresno, during the entire year, the rain falls for 59.3 days and collects up to 10.43" (265mm) of precipitation.Daylight
The average length of the day in September in Fresno is 12h and 24min.On the first day of September, sunrise is at 6:30 am and sunset at 7:26 pm. On the last day of the month, sunrise is at 6:54 am and sunset at 6:43 pm PDT.
Sunshine
In September, the average sunshine is 11.2h.UV index
In September, the average daily maximum UV index is 6. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for average individuals.Note: The maximum daily UV index, 6 in September, converts into the following recommendations:
Enforce precautions and stick to sun safety measures. Preservation from skin and eye damage is essential. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete sun protection. Employ a wide-brim hat for potent defense against up to 50% of UV rays.
Frequently asked questions
How hot does it get in Fresno in September?
What is the average humidity in September in Fresno?
How much does it rain in Fresno in September?
What is the average length of the day in September in Fresno?
When is the sunrise / sunset in September in Fresno?
How long on average sun shines in September in Fresno?
What is the UV index reading in September in Fresno?
Average temperature in September
Fresno, CA
- Average high temperature in September: 91.8°F
The warmest month (with the highest average high temperature) is July (99.7°F).
The month with the lowest average high temperature is December (56.1°F).
- Average low temperature in September: 63.3°F
The month with the highest average low temperature is July (67.3°F).
The coldest month (with the lowest average low temperature) is December (41.4°F).
Average pressure in September
Fresno, CA
- Average pressure in September: 29.92"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in September
Fresno, CA
- Average wind speed in September: 4.6mph
The windiest month (with the highest average wind speed) is June (5.8mph).
The calmest month (with the lowest average wind speed) is November (3.8mph).
Average humidity in September
Fresno, CA
- Average humidity in September: 31%
The month with the highest relative humidity is January (65%).
The month with the lowest relative humidity is July (28%).
Average rainfall in September
Fresno, CA
- Average rainfall in September: 0.16"
The wettest month (with the highest rainfall) is March (2.01").
The driest months (with the least rainfall) are June and August (0.08").
Average rainfall days in September
Fresno, CA
- Average rainfall days in September: 2.4 days
The month with the highest number of rainy days is March (10.3 days).
The month with the least rainy days is August (1.2 days).
Average daylight in September /
Average sunshine in September
Fresno, CA
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in September: 11h and 1min
The months with the most sunshine are June, July and August (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 30min).
Average sunshine days in September
Fresno, CA
- Average sunshine days in September: 26.8 days
The month with the most sunshine days is August (28.2 days).
The month with the least sunshine days is March (19.5 days).
Average UV index in September
Fresno, CA
- Average UV index in September: 6
The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January, November and December (UV index 3).
Average cloud cover in September
Fresno, CA
- Average cloud cover in September: 6
The month with the most cloud cover is March (Cloud cover 27).
The month with the least cloud cover is August (Cloud cover 4).
Average visibility in September
Fresno, CA
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Fresno, California, USA
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