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 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 transition into September is accompanied by a slight temperature decrease, with the average high-temperature shifting from a tropical 87.4°F (30.8°C) in August to a warm 81.9°F (27.7°C). September nights are characterized by a notable drop from daytime highs, with an average low-temperature of 56.1°F (13.4°C).Humidity
The average relative humidity in September is 36%.Rainfall
In Tuolumne, during September, the rain falls for 2.9 days and regularly aggregates up to 0.24" (6mm) of precipitation. Throughout the year, there are 77.4 rainfall days, and 29.06" (738mm) of precipitation is accumulated.Snowfall
In Tuolumne, snow does not fall in June through October.Daylight
In Tuolumne, California, the average length of the day in September is 12h and 25min.On the first day of the month, sunrise is at 6:31 am and sunset at 7:29 pm. On the last day of September, sunrise is at 6:56 am and sunset at 6:44 pm PDT.
Sunshine
The average sunshine in September is 11.3h.UV index
In September, the average daily maximum UV index in Tuolumne is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for the ordinary person.Note: The maximum UV index, 5 during September, leads to the following recommendations:
Exercise caution. The susceptibility of light skin individuals to burns is less than 30 minutes. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. Experience reduced UV exposure by about half when donning a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures 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 is the sunrise / sunset in September?
How many hours of sunshine does Tuolumne have in September?
What is the UV index reading in September in Tuolumne?
Average temperature in September
Tuolumne, CA
- Average high temperature in September: 81.9°F
The warmest month (with the highest average high temperature) is July (88.3°F).
The month with the lowest average high temperature is December (50.4°F).
- Average low temperature in September: 56.1°F
The month with the highest average low temperature is July (60.4°F).
The coldest month (with the lowest average low temperature) is December (34.3°F).
Average pressure in September
Tuolumne, CA
- Average pressure in September: 29.93"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in September
Tuolumne, CA
- Average wind speed in September: 5.2mph
The windiest months (with the highest average wind speed) are February and March (5.8mph).
The calmest month (with the lowest average wind speed) is November (4.8mph).
Average humidity in September
Tuolumne, CA
- Average humidity in September: 36%
The month with the highest relative humidity is March (70%).
The months with the lowest relative humidity are July and August (33%).
Average rainfall in September
Tuolumne, CA
- Average rainfall in September: 0.24"
The wettest month (with the highest rainfall) is March (5.47").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days in September
Tuolumne, CA
- Average rainfall days in September: 2.9 days
The month with the highest number of rainy days is March (13.3 days).
The month with the least rainy days is August (1.6 days).
Average snowfall in September
Tuolumne, CA
- Average snowfall in September: 0"
The month with the highest snowfall is February (12.87").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in September
Tuolumne, CA
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are February and March (3.7 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Tuolumne, CA
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in September: 11h and 2min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 6min).
Average sunshine days in September
Tuolumne, CA
- Average sunshine days in September: 26.6 days
The month with the most sunshine days is August (28.3 days).
The month with the least sunshine days is March (15.6 days).
Average UV index in September
Tuolumne, CA
- Average UV index in September: 5
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are February and November (UV index 2).
Average cloud cover in September
Tuolumne, CA
- Average cloud cover in September: 7
The month with the most cloud cover is March (Cloud cover 35).
The months with the least cloud cover are July and August (Cloud cover 5).
Average visibility in September
Tuolumne, 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).
Tuolumne, California, USA
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