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 results in a small decrease in the average high-temperature, moderately receding from a sweltering 95.2°F (35.1°C) in August to a tropical 88.3°F (31.3°C). In Proberta, the average temperature during the nights of September marks a significant drop from the daily high, settling at an enjoyable 62.2°F (16.8°C).Humidity
The average relative humidity in September is 32%.Rainfall
In Proberta, in September, during 3.1 rainfall days, 0.28" (7mm) of precipitation is typically accumulated. In Proberta, during the entire year, the rain falls for 82.8 days and collects up to 16.34" (415mm) of precipitation.Snowfall
January, March through December are months without snowfall.Daylight
In September, the average length of the day is 12h and 26min.On the first day of the month, sunrise is at 6:37 am and sunset at 7:39 pm. On the last day of September, sunrise is at 7:04 am and sunset at 6:51 pm PDT.
Sunshine
The average sunshine in September is 11.1h.UV index
In Proberta, the average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: In September, the UV index of 5 transforms into the following advice:
Take precautions. Light skin individuals may get burned in less than 30 minutes. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.
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 many days does it rain in September?
When it does not snow?
What is the average length of the day in September?
When is the sunrise / sunset in September?
How long on average sun shines in September?
How high is the UV index in September?
Average temperature in September
Proberta, CA
- Average high temperature in September: 88.3°F
The warmest month (with the highest average high temperature) is July (96.4°F).
The month with the lowest average high temperature is December (54.1°F).
- Average low temperature in September: 62.2°F
The month with the highest average low temperature is July (66.2°F).
The coldest month (with the lowest average low temperature) is December (40.3°F).
Average pressure in September
Proberta, CA
- Average pressure in September: 29.92"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in September
Proberta, CA
- Average wind speed in September: 5.3mph
The windiest month (with the highest average wind speed) is March (7.1mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).
Average humidity in September
Proberta, CA
- Average humidity in September: 32%
The month with the highest relative humidity is March (70%).
The months with the lowest relative humidity are July and August (29%).
Average rainfall in September
Proberta, CA
- Average rainfall in September: 0.28"
The wettest month (with the highest rainfall) is December (3.07").
The driest month (with the least rainfall) is August (0.04").
Average rainfall days in September
Proberta, CA
- Average rainfall days in September: 3.1 days
The month with the highest number of rainy days is March (13.7 days).
The month with the least rainy days is August (1.1 days).
Average snowfall days in September
Proberta, CA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (0.2 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
Proberta, CA
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in September: 11h and 1min
The month with the most sunshine is July (Average sunshine: 12h and 12min).
The months with the least sunshine are January and December (Average sunshine: 5h and 48min).
Average sunshine days in September
Proberta, CA
- Average sunshine days in September: 26.5 days
The months with the most sunshine days are July and August (29.3 days).
The month with the least sunshine days is March (14.9 days).
Average UV index in September
Proberta, CA
- Average UV index in September: 5
The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in September
Proberta, CA
- Average cloud cover in September: 8
The month with the most cloud cover is March (Cloud cover 38).
The month with the least cloud cover is July (Cloud cover 4).
Average visibility in September
Proberta, 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).
Proberta, California, USA
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