September weather forecast and climate
Green Valley Lake, CA

Weather in September

The first month of the autumn, September, is also a moderately hot month in Green Valley Lake, California, with average temperature ranging between min 61.9°F (16.6°C) and max 84°F (28.9°C).

Temperature

In Green Valley Lake, California, the average high-temperature in September is practically the same as in August - a moderately hot 84°F (28.9°C). The average low-temperature, in Green Valley Lake, is 61.9°F (16.6°C).

Humidity

In Green Valley Lake, the average relative humidity is 37%.

Rainfall

In Green Valley Lake, it is raining for 2.3 days, with typically 0.12" (3mm) of accumulated precipitation. In Green Valley Lake, during the entire year, the rain falls for 42.2 days and collects up to 5.55" (141mm) of precipitation.

Snowfall

June through October are months without snowfall in Green Valley Lake, California.

Daylight

In Green Valley Lake, the average length of the day is 12.4h.

Sunshine

The average sunshine in September is 10.6h.

UV index

The average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high threat to health from unprotected exposure to the Sun's UV rays for the ordinary person.
Note: The average daily UV index of 6 transform into the following instructions:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. 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 Green Valley Lake?

In Green Valley Lake, in September, the average high-temperature is 84°F (28.9°C), and the average low-temperature is 61.9°F (16.6°C).

What is the average humidity in September in Green Valley Lake?

The average relative humidity in September in Green Valley Lake is 37%.

How much does it rain in Green Valley Lake in September?

In Green Valley Lake, in September, during 2.3 rainfall days, 0.12" (3mm) of precipitation is typically accumulated.

When it does not snow in Green Valley Lake?

In Green Valley Lake, California, snow does not fall in June through October.

What is the average length of the day in September in Green Valley Lake?

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

How many hours of sunshine does Green Valley Lake have in September?

In September, the average sunshine in Green Valley Lake, California, is 10.6h.

What is the UV index reading in September in Green Valley Lake?

The average daily maximum UV index in September in Green Valley Lake, California, is 6. A UV Index estimate of 6 to 7 represents a high health risk from unprotected exposure to the UV radiation.

Average temperature in September
Green Valley Lake, CA

Average temperature in September - Green Valley Lake, CA
  • Average high temperature in September: 84°F

The warmest months (with the highest average high temperature) are July and August (88.3°F).
The month with the lowest average high temperature is December (53.4°F).

  • Average low temperature in September: 61.9°F

The month with the highest average low temperature is August (66.4°F).
The coldest month (with the lowest average low temperature) is December (38.3°F).

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Average pressure in September
Green Valley Lake, CA

Average pressure in September - Green Valley Lake, CA
  • Average pressure in September: 29.86"

The month with the highest atmospheric pressure is January (30.1").
The month with the lowest atmospheric pressure is June (29.83").

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Average wind speed in September
Green Valley Lake, CA

Average wind speed in September - Green Valley Lake, CA
  • Average wind speed in September: 5.3mph

The windiest month (with the highest average wind speed) is April (7.5mph).
The calmest month (with the lowest average wind speed) is September (5.3mph).

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Average humidity in September
Green Valley Lake, CA

Average humidity in September - Green Valley Lake, CA
  • Average humidity in September: 37%

Months with the highest relative humidity are February and December (52%).
The month with the lowest relative humidity is August (32%).

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Average rainfall in September
Green Valley Lake, CA

Average rainfall in September - Green Valley Lake, CA
  • Average rainfall in September: 0.12"

The wettest month (with the highest rainfall) is February (1.1").
The driest month (with the least rainfall) is June (0.08").

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Average rainfall days in September
Green Valley Lake, CA

Average rainfall days in September - Green Valley Lake, CA
  • Average rainfall days in September: 2.3 days

The month with the highest number of rainy days is March (5.7 days).
The month with the least rainy days is June (1.2 days).

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Average snowfall in September
Green Valley Lake, CA

Average snowfall in September - Green Valley Lake, CA
  • Average snowfall in September: 0"

The month with the highest snowfall is April (4.09").
Months with the least snowfall are June, July, August, September and October (0").

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Average snowfall days in September
Green Valley Lake, CA

Average snowfall days in September - Green Valley Lake, CA
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (4 days).
Months with the least snowfall days are June, July, August, September and October (0 days).

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Average daylight in September /
Average sunshine in September
Green Valley Lake, CA

Average daylight in September / Average sunshine in September - Green Valley Lake, CA
  • Average daylight in September: 12.4h

The month with the longest days is June (Average daylight: 14.4h).
The month with the shortest days is December (Average daylight: 9.9h).

  • Average sunshine in September: 10.6h

Months with the most sunshine are June and July (Average sunshine: 12.1h).
The month with the least sunshine is December (Average sunshine: 6.9h).

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Average sunshine days in September
Green Valley Lake, CA

Average sunshine days in September - Green Valley Lake, CA
  • Average sunshine days in September: 26 days

The month with the most sunshine days is June (27.9 days).
The month with the least sunshine days is February (21.8 days).

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Average UV index in September
Green Valley Lake, CA

Average UV index in September - Green Valley Lake, CA
  • Average UV index in September: 6

The month with the highest UV index is July (UV index 7).
Months with the lowest UV index are January, February, November and December (UV index 3).

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Average cloud cover in September
Green Valley Lake, CA

Average cloud cover in September - Green Valley Lake, CA
  • Average cloud cover in September: 6

The month with the most cloud cover is December (Cloud cover 22).
The month with the least cloud cover is August (Cloud cover 5).

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Average visibility in September
Green Valley Lake, CA

Average visibility in September - Green Valley Lake, 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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