September weather forecastDanby, CA
September
Weather in September
The first month of the autumn, September, is still a tropical month in Danby, California, with an average temperature fluctuating between 94.8°F (34.9°C) and 77.4°F (25.2°C).Temperature
September sees a slight reduction in average high-temperature, with a shift from a sweltering 101.7°F (38.7°C) in August to a tropical 94.8°F (34.9°C). September's nights observe an average temperature of 77.4°F (25.2°C).Humidity
The average relative humidity in September is 24%.Rainfall
In Danby, during September, the rain falls for 4.3 days and regularly aggregates up to 0.43" (11mm) of precipitation. In Danby, during the entire year, the rain falls for 41.8 days and collects up to 4.21" (107mm) of precipitation.Daylight
The average length of the day in September is 12h and 23min.On the first day of the month, sunrise is at 6:15 am and sunset at 7:07 pm. On the last day of September, in Danby, sunrise is at 6:35 am and sunset at 6:26 pm PDT.
Sunshine
The average sunshine in September is 10.1h.UV index
In Danby, the average daily maximum UV index in September is 7. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for the average person.Note: A daily high UV index of 7 in September leads to these guidelines:
Guard oneself from overexposure. Defence against sun injury is vital. Avoid direct Sun exposure and stay in the shade between 10 a.m. and 4 p.m., a time when UV radiation is most intense, noting that not all shade structures offer full protection. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Danby, CA
- Average high temperature in September: 94.8°F
The warmest month (with the highest average high temperature) is July (102.6°F).
The month with the lowest average high temperature is December (59°F).
- Average low temperature in September: 77.4°F
The month with the highest average low temperature is August (83.8°F).
The coldest month (with the lowest average low temperature) is December (45.7°F).
Average pressure in September
Danby, CA
- Average pressure in September: 29.82"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.75"Hg).
Average wind speed in September
Danby, CA
- Average wind speed in September: 6.8mph
The windiest month (with the highest average wind speed) is April (9mph).
The calmest month (with the lowest average wind speed) is September (6.8mph).
Average humidity in September
Danby, CA
- Average humidity in September: 24%
The months with the highest relative humidity are January and December (40%).
The month with the lowest relative humidity is June (14%).
Average rainfall in September
Danby, CA
- Average rainfall in September: 0.43"
The wettest month (with the highest rainfall) is July (0.67").
The driest month (with the least rainfall) is June (0.04").
Average rainfall days in September
Danby, CA
- Average rainfall days in September: 4.3 days
The month with the highest number of rainy days is July (7.8 days).
The month with the least rainy days is June (1.1 days).
Average daylight in September /
Average sunshine in September
Danby, CA
- Average daylight in September: 12h and 24min
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 6min
The months with the most sunshine are June and August (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 7h and 0min).
Average sunshine days in September
Danby, CA
- Average sunshine days in September: 22.8 days
The month with the most sunshine days is November (28.1 days).
The month with the least sunshine days is July (17.9 days).
Average UV index in September
Danby, CA
- Average UV index in September: 7
The months with the highest UV index are June, July and August (UV index 8).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in September
Danby, CA
- Average cloud cover in September: 7
The month with the most cloud cover is December (Cloud cover 19).
The month with the least cloud cover is June (Cloud cover 5).
Average visibility in September
Danby, 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).
