September weather forecast and climate
Jenner, CA

Weather in September

September, the first month of the autumn, in Jenner, is still a warm month, with average temperature varying between 79.9°F (26.6°C) and 53.4°F (11.9°C).

Temperature

In Jenner, the average high-temperature is almost the same as in August - a still moderately hot 79.9°F (26.6°C). In September, the average low-temperature is 53.4°F (11.9°C).

Humidity

September is the least humid month, with an average relative humidity of 62%.

Rainfall

In Jenner, during September, the rain falls for 1.9 days and regularly aggregates up to 0.08" (2mm) of precipitation. Throughout the year, there are 60.1 rainfall days, and 12.87" (327mm) of precipitation is accumulated.

Daylight

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

Sunshine

In September, the average sunshine in Jenner is 10.8h.

UV index

In Jenner, the average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from the exposure to the Sun's UV rays for the average person.
Note: The daily maximum UV index of 5 interpret into the following advice:
Take precautions - Protection against sunburn is recommended. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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FAQ

What is the temperature in September in Jenner?

The average high-temperature, in September, in Jenner, California, is 79.9°F (26.6°C), while the average low-temperature is 53.4°F (11.9°C).

What is the least humid month in Jenner?

The least humid month in Jenner, California, is September, with an average relative humidity of 62%.

What is the average humidity in September in Jenner?

In September, the average relative humidity is 62%.

How much does it rain in Jenner in September?

In Jenner, California, in September, it is raining for 1.9 days, with typically 0.08" (2mm) of accumulated precipitation.

What is the average length of the day in September in Jenner?

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

How many hours of sunshine does Jenner have in September?

In Jenner, California, the average sunshine in September is 10.8h.

How high is the UV index in September in Jenner?

In Jenner, the average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a medium hazard to health from the exposure to the Sun's UV rays.

Average temperature in September
Jenner, CA

Average temperature in September - Jenner, CA
  • Average high temperature in September: 79.9°F

The warmest month (with the highest average high temperature) is August (81°F).
The month with the lowest average high temperature is December (56.3°F).

  • Average low temperature in September: 53.4°F

Months with the highest average low temperature are August and September (53.4°F).
The coldest month (with the lowest average low temperature) is December (41.4°F).

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Average pressure in September
Jenner, CA

Average pressure in September - Jenner, CA
  • Average pressure in September: 29.92"

The month with the highest atmospheric pressure is January (30.13").
Months with the lowest atmospheric pressure are June, August and September (29.92").

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Average wind speed in September
Jenner, CA

Average wind speed in September - Jenner, CA
  • Average wind speed in September: 5.3mph

The windiest month (with the highest average wind speed) is May (7.2mph).
The calmest month (with the lowest average wind speed) is November (5mph).

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Average humidity in September
Jenner, CA

Average humidity in September - Jenner, CA
  • Average humidity in September: 62%

The month with the highest relative humidity is March (77%).
The month with the lowest relative humidity is September (62%).

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Average rainfall in September
Jenner, CA

Average rainfall in September - Jenner, CA
  • Average rainfall in September: 0.08"

The wettest month (with the highest rainfall) is February (3.27").
The driest months (with the least rainfall) are July and August (0.04").

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Average rainfall days in September
Jenner, CA

Average rainfall days in September - Jenner, CA
  • Average rainfall days in September: 1.9 days

The month with the highest number of rainy days is March (10.3 days).
The month with the least rainy days is August (0.9 days).

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Average daylight in September /
Average sunshine in September
Jenner, CA

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

The month with the longest days is June (Average daylight: 14.8h).
The month with the shortest days is December (Average daylight: 9.5h).

  • Average sunshine in September: 10.8h

The month with the most sunshine is July (Average sunshine: 11.8h).
The month with the least sunshine is December (Average sunshine: 5.4h).

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Average sunshine days in September
Jenner, CA

Average sunshine days in September - Jenner, CA
  • Average sunshine days in September: 27.9 days

The month with the most sunshine days is July (28.9 days).
The month with the least sunshine days is February (19.9 days).

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Average UV index in September
Jenner, CA

Average UV index in September - Jenner, CA
  • Average UV index in September: 5

Months with the highest UV index are June, July and August (UV index 6).
Months with the lowest UV index are January, February, November and December (UV index 3).

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Average cloud cover in September
Jenner, CA

Average cloud cover in September - Jenner, CA
  • Average cloud cover in September: 12

The month with the most cloud cover is March (Cloud cover 42).
The month with the least cloud cover is July (Cloud cover 11).

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Average visibility in September
Jenner, CA

Average visibility in September - Jenner, 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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