September weather forecastKneeland, CA
September
Weather in September
The first month of the autumn, September, is still a pleasant month in Kneeland, California, with temperature in the range of an average low of 51.6°F (10.9°C) and an average high of 68.9°F (20.5°C).Temperature
September commences with an average high-temperature of a still pleasant 68.9°F (20.5°C), showing little deviation from August's 69.6°F (20.9°C). Kneeland's average low-temperature for the month of September records at a cool 51.6°F (10.9°C).Humidity
In Kneeland, the average relative humidity in September is 76%.Rainfall
In Kneeland, during September, the rain falls for 4.5 days and regularly aggregates up to 0.79" (20mm) of precipitation. In Kneeland, during the entire year, the rain falls for 114.7 days and collects up to 29.37" (746mm) of precipitation.Snowfall
In Kneeland, snow does not fall in January, March through December.Daylight
In September, the average length of the day is 12h and 27min.On the first day of September, sunrise is at 6:43 am and sunset at 7:47 pm. On the last day of the month, sunrise is at 7:12 am and sunset at 6:59 pm PDT.
Sunshine
In Kneeland, the average sunshine in September is 10.3h.UV index
The average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for average individuals.Note: In September, the maximum UV index of 4 suggests these recommendations:
Exercise prevention - Precautions against solar damage are endorsed. To guard against the harmful effects of the Sun, minimize exposure during midday. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Kneeland, CA
- Average high temperature in September: 68.9°F
The warmest month (with the highest average high temperature) is August (69.6°F).
The month with the lowest average high temperature is December (52.7°F).
- Average low temperature in September: 51.6°F
The month with the highest average low temperature is August (52.3°F).
The coldest month (with the lowest average low temperature) is February (41.9°F).
Average pressure in September
Kneeland, CA
- Average pressure in September: 29.97"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is August (29.96"Hg).
Average wind speed in September
Kneeland, CA
- Average wind speed in September: 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 (5.7mph).
Average humidity in September
Kneeland, CA
- Average humidity in September: 76%
The month with the highest relative humidity is March (82%).
The month with the lowest relative humidity is October (75%).
Average rainfall in September
Kneeland, CA
- Average rainfall in September: 0.79"
The wettest month (with the highest rainfall) is December (5.31").
The driest month (with the least rainfall) is July (0.12").
Average rainfall days in September
Kneeland, CA
- Average rainfall days in September: 4.5 days
The month with the highest number of rainy days is March (17.5 days).
The month with the least rainy days is August (2.1 days).
Average snowfall in September
Kneeland, 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
Kneeland, 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
Kneeland, CA
- Average daylight in September: 12h and 24min
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 18min
The month with the most sunshine is July (Average sunshine: 11h and 36min).
The month with the least sunshine is December (Average sunshine: 5h and 12min).
Average sunshine days in September
Kneeland, CA
- Average sunshine days in September: 24.9 days
The month with the most sunshine days is July (28.3 days).
The month with the least sunshine days is March (12.1 days).
Average UV index in September
Kneeland, CA
- Average UV index in September: 4
The month with the highest UV index is July (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
Kneeland, CA
- Average cloud cover in September: 18
The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is August (Cloud cover 16).
Average visibility in September
Kneeland, CA
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, September, October, November and December (6mi).
The month with the lowest visibility is August (5mi).
