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
The introduction of September notes a subtle temperature variation to a still agreeable 68°F (20°C) from August's 68.9°F (20.5°C). An average low-temperature of 51.1°F (10.6°C) marks the nights throughout September.Humidity
The months with the lowest humidity are September and October, with an average relative humidity of 76%.Rainfall
In Korbel, in September, during 4.6 rainfall days, 0.83" (21mm) of precipitation is typically accumulated. In Korbel, California, during the entire year, the rain falls for 114.9 days and collects up to 31.61" (803mm) of precipitation.Snowfall
January, March through December are months without snowfall.Daylight
In September, the average length of the day is 12h and 27min.On the first day of the month, sunrise is at 6:43 am and sunset at 7:47 pm. On the last day of September, sunrise is at 7:12 am and sunset at 6:58 pm PDT.
Sunshine
In September, the average sunshine is 10.2h.UV index
In September, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for the average person.Note: The maximum UV index, 4 during September, leads to the following recommendations:
Ensure safety - Recommendations to avert sunburn are presented. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Korbel in September?
What is the least humid month?
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?
How many hours of sunshine does Korbel have in September?
What is the UV index intensity in September?
Average temperature in September
Korbel, CA
- Average high temperature in September: 68°F
The warmest month (with the highest average high temperature) is August (68.9°F).
The month with the lowest average high temperature is December (52.7°F).
- Average low temperature in September: 51.1°F
The month with the highest average low temperature is August (51.4°F).
The coldest month (with the lowest average low temperature) is February (41.7°F).
Average pressure in September
Korbel, CA
- Average pressure in September: 29.98"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is August (29.97"Hg).
Average wind speed in September
Korbel, CA
- Average wind speed in September: 5.6mph
The windiest month (with the highest average wind speed) is March (8.4mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).
Average humidity in September
Korbel, CA
- Average humidity in September: 76%
The month with the highest relative humidity is March (82%).
The months with the lowest relative humidity are September and October (76%).
Average rainfall in September
Korbel, CA
- Average rainfall in September: 0.83"
The wettest month (with the highest rainfall) is December (5.87").
The driest month (with the least rainfall) is July (0.08").
Average rainfall days in September
Korbel, CA
- Average rainfall days in September: 4.6 days
The month with the highest number of rainy days is March (16.8 days).
The months with the least rainy days are July and August (2.2 days).
Average snowfall in September
Korbel, CA
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.39").
The months with the least snowfall are January, March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in September
Korbel, CA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (0.3 days).
The months with the least snowfall days are January, March, April, May, June, July, August, September, October and November (0 days).
Average daylight in September /
Average sunshine in September
Korbel, CA
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in September: 10h and 1min
The month with the most sunshine is July (Average sunshine: 11h and 30min).
The months with the least sunshine are January and December (Average sunshine: 5h and 6min).
Average sunshine days in September
Korbel, CA
- Average sunshine days in September: 24.7 days
The months with the most sunshine days are July and August (28 days).
The month with the least sunshine days is March (12.5 days).
Average UV index in September
Korbel, CA
- Average UV index in September: 4
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 3).
Average cloud cover in September
Korbel, CA
- Average cloud cover in September: 19
The month with the most cloud cover is March (Cloud cover 48).
The months with the least cloud cover are July and August (Cloud cover 18).
Average visibility in September
Korbel, CA
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).
Korbel, California, USA
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