September weather forecastWarden, WA
September
Weather in September
The first month of the autumn, September, is still a warm month in Warden, Washington, with temperature in the range of an average high of 77.4°F (25.2°C) and an average low of 56.1°F (13.4°C).Temperature
September weather is marked by a drop in the average high-temperature, falling from a hot 88°F (31.1°C) in August to a moderately hot 77.4°F (25.2°C). Throughout September, Warden anticipates an average low-temperature of 56.1°F (13.4°C).Humidity
The average relative humidity in September in Warden is 43%.Rainfall
In Warden, in September, it is raining for 4.2 days, with typically 0.24" (6mm) of accumulated precipitation. Throughout the year, there are 102 rainfall days, and 7.4" (188mm) of precipitation is accumulated.Snowfall
January through April, September, November and December are months with snowfall in Warden, Washington. September is the first month it typically snows. Throughout September, in the average 0.1 snowfall days, it receives 0.08" (2mm) of snow. Throughout the year, in Warden, there are 16.7 snowfall days, and 6.18" (157mm) of snow is accumulated.Daylight
The average length of the day in September is 12h and 32min.On the first day of the month, sunrise is at 6:16 am and sunset at 7:35 pm. On the last day of September, in Warden, sunrise is at 6:54 am and sunset at 6:36 pm PDT.
Sunshine
In September, the average sunshine is 10.8h.UV index
In September, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In September, the maximum UV index of 4 suggests these recommendations:
Prioritize safety - Recommendations to avert sunburn are shared. Direct Sun exposure should be minimized especially during midday when radiation is most intense. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. Be prepared! The intensity of the Sun's UV radiation can be amplified nearly double due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Warden, WA
- Average high temperature in September: 77.4°F
The warmest month (with the highest average high temperature) is July (88.7°F).
The month with the lowest average high temperature is December (35.6°F).
- Average low temperature in September: 56.1°F
The month with the highest average low temperature is August (62.8°F).
The coldest month (with the lowest average low temperature) is December (25.7°F).
Average pressure in September
Warden, WA
- Average pressure in September: 29.95"Hg
The month with the highest atmospheric pressure is January (30.18"Hg).
The month with the lowest atmospheric pressure is August (29.9"Hg).
Average wind speed in September
Warden, WA
- Average wind speed in September: 6.4mph
The windiest month (with the highest average wind speed) is April (8.1mph).
The calmest month (with the lowest average wind speed) is December (5.5mph).
Average humidity in September
Warden, WA
- Average humidity in September: 43%
The month with the highest relative humidity is January (82%).
The months with the lowest relative humidity are July and August (36%).
Average rainfall in September
Warden, WA
- Average rainfall in September: 0.24"
The wettest months (with the highest rainfall) are January and December (0.94").
The driest months (with the least rainfall) are July and August (0.2").
Average rainfall days in September
Warden, WA
- Average rainfall days in September: 4.2 days
The month with the highest number of rainy days is March (13.7 days).
The month with the least rainy days is August (3.4 days).
Average snowfall in September
Warden, WA
- Average snowfall in September: 0.08"
The month with the highest snowfall is February (1.93").
The months with the least snowfall are May, June, July, August and October (0").
Average snowfall days in September
Warden, WA
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is December (5.5 days).
The months with the least snowfall days are May, June, July, August and October (0 days).
Average daylight in September /
Average sunshine in September
Warden, WA
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 36min).
- Average sunshine in September: 10h and 48min
The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The months with the least sunshine are January and December (Average sunshine: 5h and 18min).
Average sunshine days in September
Warden, WA
- Average sunshine days in September: 24.4 days
The month with the most sunshine days is July (25.7 days).
The month with the least sunshine days is March (15 days).
Average UV index in September
Warden, WA
- Average UV index in September: 4
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Warden, WA
- Average cloud cover in September: 16
The month with the most cloud cover is January (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 10).
Average visibility in September
Warden, WA
- Average visibility in September: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
