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
Green Valley Lake ushers in September with an average high-temperature of a moderately hot 84°F (28.9°C), showing a close resemblance to the previous month. Green Valley Lake experiences a consistent, yet significant, drop from daily highs to a low-temperature of 61.9°F (16.6°C) throughout September.Humidity
In September, the average relative humidity is 37%.Rainfall
In September, the rain falls for 2.3 days. Throughout September, 0.12" (3mm) of precipitation is accumulated. 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
In Green Valley Lake, snow does not fall in June through October.Daylight
In September, the average length of the day in Green Valley Lake is 12h and 22min.On the first day of the month, sunrise is at 6:22 am and sunset at 7:13 pm. On the last day of September, sunrise is at 6:42 am and sunset at 6:33 pm PDT.
Sunshine
The average sunshine in September is 10.6h.UV index
In September, the average daily maximum UV index is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: The UV index of 6 during September translates into the following guidance:
Undertake protective measures and comply with sun safety rules. Shielding against skin and eye damage is essential. It's important to stay in the shade and limit exposure to the sun from 10 a.m. to 4 p.m., when UV radiation is most intense, although remember that shade structures may not provide full sun protection. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it hot in Green Valley Lake during September?
What is the average humidity in September?
How many days 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 in Green Valley Lake?
How long on average sun shines in September?
What is the UV index intensity in September?
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).
Average pressure in September
Green Valley Lake, CA
- Average pressure in September: 29.86"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.83"Hg).
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).
Average humidity in September
Green Valley Lake, CA
- Average humidity in September: 37%
The months with the highest relative humidity are February and December (52%).
The month with the lowest relative humidity is August (32%).
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").
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).
Average snowfall in September
Green Valley Lake, CA
- Average snowfall in September: 0"
The month with the highest snowfall is April (4.09").
The months with the least snowfall are June, July, August, September and October (0").
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).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Green Valley Lake, CA
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in September: 10h and 4min
The months with the most sunshine are June and July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 54min).
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).
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).
The months with the lowest UV index are January, February, November and December (UV index 3).
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).
Average visibility in September
Green Valley Lake, 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).
Green Valley Lake, California, USA
Weather forecast for your location
2. Allow the app to use your location