September weather forecastTermo, CA
September
Weather in September
September, the first month of the autumn in Termo, is also a moderately hot month, with temperature in the range of an average high of 74.3°F (23.5°C) and an average low of 45.9°F (7.7°C).Temperature
A modest decline in the average high-temperature is seen during September, decreasing from a warm 82°F (27.8°C) in August to a still moderately hot 74.3°F (23.5°C). Termo records a significant temperature drop in September nights, lowering to an average of 45.9°F (7.7°C).Humidity
The average relative humidity in September is 41%.Rainfall
In Termo, in September, during 3.8 rainfall days, 0.28" (7mm) of precipitation is typically accumulated. In Termo, during the entire year, the rain falls for 73 days and collects up to 12.17" (309mm) of precipitation.Snowfall
January through June, September through December are months with snowfall. September is the first month it typically snows. Throughout September, in the average 0.3 snowfall days, it receives 0.12" (3mm) of snow. Throughout the year, there are 66 snowfall days, and 54.69" (1389mm) of snow is accumulated.Daylight
The average length of the day in September is 12h and 27min.On the first day of the month, sunrise is at 6:29 am and sunset at 7:33 pm. On the last day of September, sunrise is at 6:58 am and sunset at 6:44 pm PDT.
Sunshine
In September, the average sunshine in Termo is 11.3h.UV index
The average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for ordinary individuals.Note: In September, the maximum UV index of 4 suggests this advice:
Undertake precautions - Guarding against sun damage is counselled. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense. Remember! The Sun's UV radiation can be magnified almost twofold by the reflection of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Termo, CA
- Average high temperature in September: 74.3°F
The warmest month (with the highest average high temperature) is July (83.7°F).
The month with the lowest average high temperature is December (36.5°F).
- Average low temperature in September: 45.9°F
The month with the highest average low temperature is July (51.4°F).
The coldest month (with the lowest average low temperature) is December (22.3°F).
Average pressure in September
Termo, CA
- Average pressure in September: 29.94"Hg
The month with the highest atmospheric pressure is January (30.2"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in September
Termo, CA
- Average wind speed in September: 5.9mph
The windiest month (with the highest average wind speed) is April (7.4mph).
The calmest month (with the lowest average wind speed) is August (5.7mph).
Average humidity in September
Termo, CA
- Average humidity in September: 41%
The month with the highest relative humidity is January (81%).
The month with the lowest relative humidity is August (35%).
Average rainfall in September
Termo, CA
- Average rainfall in September: 0.28"
The wettest month (with the highest rainfall) is March (2.01").
The driest month (with the least rainfall) is July (0.12").
Average rainfall days in September
Termo, CA
- Average rainfall days in September: 3.8 days
The month with the highest number of rainy days is March (10.4 days).
The month with the least rainy days is August (2.2 days).
Average snowfall in September
Termo, CA
- Average snowfall in September: 0.12"
The month with the highest snowfall is December (12.91").
The months with the least snowfall are July and August (0").
Average snowfall days in September
Termo, CA
- Average snowfall days in September: 0.3 days
The months with the highest number of snowfall days are March and December (12.5 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
Termo, 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: 11h and 18min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is January (Average sunshine: 5h and 42min).
Average sunshine days in September
Termo, CA
- Average sunshine days in September: 25.9 days
The months with the most sunshine days are July and August (27.3 days).
The month with the least sunshine days is March (12.8 days).
Average UV index in September
Termo, CA
- Average UV index in September: 4
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in September
Termo, CA
- Average cloud cover in September: 10
The month with the most cloud cover is December (Cloud cover 40).
The months with the least cloud cover are July and August (Cloud cover 7).
Average visibility in September
Termo, CA
- Average visibility in September: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (5mi).
