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 snowfall 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
The onset of September brings a small shift in high-temperatures, falling from a torrid 99.7°F (37.6°C) in August to a tropical 92.7°F (33.7°C). Despite high daytime temperatures, the average temperature lowers to a refreshing 61.3°F (16.3°C) during September nights.Humidity
In Visalia, the average relative humidity in September is 33%.Rainfall
In September, the rain falls for 2.1 days. Throughout September, 0.2" (5mm) of precipitation is accumulated. Throughout the year, there are 62 rainfall days, and 12.17" (309mm) of precipitation is accumulated.Snowfall
January, March through December are months without snowfall.Daylight
In September, the average length of the day is 12h and 23min.On the first day of September, sunrise is at 6:29 am and sunset at 7:24 pm. On the last day of the month, sunrise is at 6:52 am and sunset at 6:41 pm PDT.
Sunshine
In September, the average sunshine is 11.2h.UV index
The average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.Note: During September, 6 as the daily maximum UV index converts into the following advice:
Inhibit overexposure. Warding off sun damage is of utmost importance. Limit your exposure to the sun's UV radiation, which is strongest between 10 a.m. and 4 p.m., and note that parasols or canopies may not provide full sun protection. Boost your sun resistance with garments that are densely woven yet spacious.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot does it get in September?
What is the average humidity in September?
How much does it rain in September?
When it does not snow?
What is the average length of the day in September?
When are sunrise and sunset in September?
How many hours of sunshine does Visalia have in September?
How high is the UV index in September in Visalia?
Average temperature in September
Visalia, CA
- Average high temperature in September: 92.7°F
The warmest month (with the highest average high temperature) is July (100.6°F).
The month with the lowest average high temperature is December (56.7°F).
- Average low temperature in September: 61.3°F
The month with the highest average low temperature is July (65.1°F).
The coldest month (with the lowest average low temperature) is December (41.5°F).
Average pressure in September
Visalia, CA
- Average pressure in September: 29.91"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in September
Visalia, CA
- Average wind speed in September: 4.5mph
The windiest month (with the highest average wind speed) is June (5.4mph).
The calmest month (with the lowest average wind speed) is December (3.8mph).
Average humidity in September
Visalia, CA
- Average humidity in September: 33%
The month with the highest relative humidity is January (67%).
The months with the lowest relative humidity are July and August (31%).
Average rainfall in September
Visalia, CA
- Average rainfall in September: 0.2"
The wettest month (with the highest rainfall) is March (2.32").
The driest month (with the least rainfall) is August (0.08").
Average rainfall days in September
Visalia, CA
- Average rainfall days in September: 2.1 days
The month with the highest number of rainy days is March (10.8 days).
The month with the least rainy days is August (1 days).
Average snowfall days in September
Visalia, CA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (0.1 days).
The months with the least snowfall days are January, March, April, May, June, July, August, September, October, November and December (0 days).
Average daylight in September /
Average sunshine in September
Visalia, 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 month with the most sunshine is June (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 6h and 30min).
Average sunshine days in September
Visalia, CA
- Average sunshine days in September: 26.7 days
The month with the most sunshine days is August (28.4 days).
The month with the least sunshine days is March (19.8 days).
Average UV index in September
Visalia, CA
- Average UV index in September: 6
The month with the highest UV index is July (UV index 8).
The months with the lowest UV index are January, November and December (UV index 3).
Average cloud cover in September
Visalia, CA
- Average cloud cover in September: 5
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
Visalia, 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).
Visalia, California, USA
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