September weather forecast
French Gulch, CA

Weather in September

September, the first month of the autumn, in French Gulch, is still a warm month, with average temperature fluctuating between 55.6°F (13.1°C) and 84.2°F (29°C).

Temperature

In September, the average high-temperature marginally drops, from a hot 91.2°F (32.9°C) in August, to a warm 84.2°F (29°C). The average low-temperature, in French Gulch, is 55.6°F (13.1°C).

Humidity

In September, the average relative humidity in French Gulch is 39%.

Rainfall

In French Gulch, in September, during 3.5 rainfall days, 0.35" (9mm) of precipitation is typically accumulated. In French Gulch, California, during the entire year, the rain falls for 99.5 days and collects up to 30.43" (773mm) of precipitation.

Snowfall

April through October are months without snowfall in French Gulch.

Daylight

The average length of the day in September is 12.4h.

Sunshine

The average sunshine in September is 11.1h.

UV index

The average daily maximum UV index in French Gulch, California, is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from the exposure to the Sun's UV rays for average individuals.
Note: The daily maximum UV index of 5 interpret into the following advice:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

What is the average humidity in September in French Gulch?

The average relative humidity in September in French Gulch is 39%.

How many days does it rain in September in French Gulch?

In French Gulch, in September, it is raining for 3.5 days, with typically 0.35" (9mm) of accumulated precipitation.

When it does not snow in French Gulch?

In French Gulch snow does not fall in April through October.

What is the average length of the day in September in French Gulch?

In September, the average length of the day is 12.4h.

How long on average sun shines in September in French Gulch?

In French Gulch, the average sunshine in September is 11.1h.

What is the UV index reading in September in French Gulch?

In September, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a medium hazard to health from unprotected exposure to the UV radiation.

Average temperature in September
French Gulch, CA

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).

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Average pressure in September
French Gulch, CA

Average pressure in September - French Gulch, CA
  • Average pressure in September: 29.94"

The month with the highest atmospheric pressure is January (30.16").
Months with the lowest atmospheric pressure are June and August (29.92").

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Average wind speed in September
French Gulch, CA

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).

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Average humidity in September
French Gulch, CA

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%).

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Average rainfall in September
French Gulch, CA

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").

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Average rainfall days in September
French Gulch, CA

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).

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Average snowfall in September
French Gulch, CA

Average snowfall in September - French Gulch, CA
  • Average snowfall in September: 0"

The month with the highest snowfall is December (0.63").
Months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days in September
French Gulch, CA

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).
Months with the least snowfall days are April, May, June, July, August, September and October (0 days).

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Average daylight in September /
Average sunshine in September
French Gulch, CA

Average daylight in September / Average sunshine in September - French Gulch, CA
  • Average daylight in September: 12.4h

The month with the longest days is June (Average daylight: 15.1h).
The month with the shortest days is December (Average daylight: 9.3h).

  • Average sunshine in September: 11.1h

The month with the most sunshine is July (Average sunshine: 12.2h).
The month with the least sunshine is December (Average sunshine: 5.5h).

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Average sunshine days in September
French Gulch, CA

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).

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Average UV index in September
French Gulch, CA

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).
Months with the lowest UV index are February, November and December (UV index 2).

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Average cloud cover in September
French Gulch, CA

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).
Months with the least cloud cover are July and August (Cloud cover 5).

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Average visibility in September
French Gulch, CA

Average visibility in September - French Gulch, CA
  • Average visibility in September: 6mi

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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