September weather forecastDouglas Flat, CA
September
Weather in September
September, the first month of the autumn in Douglas Flat, is still a warm month, with an average temperature varying between 85.3°F (29.6°C) and 58.8°F (14.9°C).Temperature
The beginning of September brings a minor change in the average high-temperature, shifting from a tropical 90.9°F (32.7°C) in August to a warm 85.3°F (29.6°C). Douglas Flat experiences a substantial decline from the daytime high temperatures in September, settling on an average low of 58.8°F (14.9°C).Humidity
In Douglas Flat, the average relative humidity in September is 36%.Rainfall
In Douglas Flat, during September, the rain falls for 3 days and regularly aggregates up to 0.24" (6mm) of precipitation. In Douglas Flat, California, during the entire year, the rain falls for 74.4 days and collects up to 22.87" (581mm) of precipitation.Snowfall
April through October are months without snowfall in Douglas Flat.Daylight
The average length of the day in September is 12h and 25min.On the first day of the month, sunrise is at 6:32 am and sunset at 7:30 pm. On the last day of September, in Douglas Flat, sunrise is at 6:57 am and sunset at 6:45 pm PDT.
Sunshine
In Douglas Flat, the average sunshine in September is 11.3h.UV index
In Douglas Flat, the average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for the ordinary person.Note: In September, the maximum UV index of 5 suggests these recommendations:
Be mindful. Those with pale skin might receive burns in fewer than 30 minutes. Avoiding the Sun during its peak radiation time around midday is a healthy practice. Stay sun-safe with clothing that is both closely woven and worn loosely.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Douglas Flat, CA
- Average high temperature in September: 85.3°F
The warmest month (with the highest average high temperature) is July (91.9°F).
The month with the lowest average high temperature is December (53.2°F).
- Average low temperature in September: 58.8°F
The month with the highest average low temperature is July (62.6°F).
The coldest month (with the lowest average low temperature) is December (37.8°F).
Average pressure in September
Douglas Flat, CA
- Average pressure in September: 29.93"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in September
Douglas Flat, CA
- Average wind speed in September: 5mph
The windiest month (with the highest average wind speed) is February (5.7mph).
The calmest month (with the lowest average wind speed) is November (4.7mph).
Average humidity in September
Douglas Flat, CA
- Average humidity in September: 36%
The month with the highest relative humidity is March (71%).
The months with the lowest relative humidity are July and August (34%).
Average rainfall in September
Douglas Flat, CA
- Average rainfall in September: 0.24"
The wettest month (with the highest rainfall) is March (4.76").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days in September
Douglas Flat, CA
- Average rainfall days in September: 3 days
The month with the highest number of rainy days is March (13 days).
The month with the least rainy days is August (1.2 days).
Average snowfall in September
Douglas Flat, CA
- Average snowfall in September: 0"
The month with the highest snowfall is February (2.32").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Douglas Flat, CA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.2 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Douglas Flat, CA
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in September: 11h and 18min
The month with the most sunshine is July (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 5h and 48min).
Average sunshine days in September
Douglas Flat, CA
- Average sunshine days in September: 26.8 days
The month with the most sunshine days is July (29.1 days).
The month with the least sunshine days is March (16.8 days).
Average UV index in September
Douglas Flat, CA
- Average UV index in September: 5
The months with the highest UV index are June and July (UV index 7).
The month with the lowest UV index is November (UV index 2).
Average cloud cover in September
Douglas Flat, CA
- Average cloud cover in September: 7
The month with the most cloud cover is March (Cloud cover 37).
The month with the least cloud cover is July (Cloud cover 4).
Average visibility in September
Douglas Flat, 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).
