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
September's arrival coincides with a soft drop in the average high-temperature, subtly decreasing from August's tropical 91.2°F (32.9°C) to a warm 84.2°F (29°C). French Gulch reports a marked divergence from daytime peaks throughout September, with lows averaging at a moderate 55.6°F (13.1°C).Humidity
In September, the average relative humidity is 39%.Rainfall
In French Gulch, California, in September, it is raining for 3.5 days, with typically 0.35" (9mm) of accumulated precipitation. Throughout the year, there are 99.5 rainfall days, and 30.43" (773mm) of precipitation is accumulated.Snowfall
April through October are months without snowfall in French Gulch, California.Daylight
In French Gulch, California, the average length of the day in September is 12h and 27min.On the first day of September, sunrise is at 6:38 am and sunset at 7:42 pm. On the last day of the month, sunrise is at 7:06 am and sunset at 6:53 pm PDT.
Sunshine
The average sunshine in September in French Gulch is 11.1h.UV index
The average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for the ordinary person.Note: A maximum high UV index of 5 in September translates into the following recommendations:
Take precautions - Protection against sun damage is advised. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. Enhance your sun protection with tightly woven, yet airy clothing.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot does it get in French Gulch in September?
What is the average humidity in September in French Gulch?
How much does it rain in French Gulch in September?
When it does not snow in French Gulch?
How many hours of daylight does French Gulch have in September?
When are sunrise and sunset in September in French Gulch?
How many hours of sunshine does French Gulch have in September?
How high is the UV index in September in French Gulch?
Average temperature in September
French Gulch, CA
- Average high temperature in September: 84.2°F
The warmest month (with the highest average high temperature) is July (92.3°F).
The month with the lowest average high temperature is December (49.3°F).
- Average low temperature in September: 55.6°F
The month with the highest average low temperature is July (61.3°F).
The coldest month (with the lowest average low temperature) is December (35.2°F).
Average pressure in September
French Gulch, CA
- Average pressure in September: 29.94"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The months with the lowest atmospheric pressure are June and August (29.92"Hg).
Average wind speed in September
French Gulch, CA
- Average wind speed in September: 4.8mph
The windiest months (with the highest average wind speed) are March, April, June and October (5.2mph).
The calmest months (with the lowest average wind speed) are August and November (4.4mph).
Average humidity in September
French Gulch, CA
- Average humidity in September: 39%
The month with the highest relative humidity is March (76%).
The month with the lowest relative humidity is August (35%).
Average rainfall in September
French Gulch, CA
- Average rainfall in September: 0.35"
The wettest month (with the highest rainfall) is March (5.91").
The driest month (with the least rainfall) is July (0.08").
Average rainfall days in September
French Gulch, CA
- Average rainfall days in September: 3.5 days
The month with the highest number of rainy days is March (16.8 days).
The month with the least rainy days is August (1.6 days).
Average snowfall in September
French Gulch, CA
- Average snowfall in September: 0"
The month with the highest snowfall is December (0.63").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
French Gulch, CA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.1 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
French Gulch, 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 18min).
- Average sunshine in September: 11h and 1min
The month with the most sunshine is July (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 5h and 30min).
Average sunshine days in September
French Gulch, CA
- Average sunshine days in September: 25.1 days
The month with the most sunshine days is August (27.3 days).
The month with the least sunshine days is March (12.7 days).
Average UV index in September
French Gulch, 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, November and December (UV index 2).
Average cloud cover in September
French Gulch, CA
- Average cloud cover in September: 9
The month with the most cloud cover is March (Cloud cover 43).
The months with the least cloud cover are July and August (Cloud cover 5).
Average visibility in September
French Gulch, 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).
French Gulch, California, USA
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