September weather forecastWilkeson, WA
September
Weather in September
The first month of the autumn, September, is also an enjoyable month in Wilkeson, Washington, with an average temperature ranging between min 46°F (7.8°C) and max 67.1°F (19.5°C).Temperature
The onset of September results in a small decrease in the average high-temperature, moderately receding from a moderately hot 74.1°F (23.4°C) in August to a refreshing 67.1°F (19.5°C). Wilkeson registers a consistent average low-temperature of 46°F (7.8°C) during September.Humidity
In Wilkeson, the average relative humidity in September is 75%.Rainfall
In Wilkeson, during September, the rain falls for 12 days and regularly aggregates up to 1.69" (43mm) of precipitation. Throughout the year, there are 189.1 rainfall days, and 41.93" (1065mm) of precipitation is accumulated.Snowfall
May through October are months without snowfall in Wilkeson.Daylight
In Wilkeson, Washington, the average length of the day in September is 12h and 32min.On the first day of the month, sunrise is at 6:28 am and sunset at 7:47 pm. On the last day of September, sunrise is at 7:06 am and sunset at 6:48 pm PDT.
Sunshine
The average sunshine in September is 9h.UV index
In September, the average daily maximum UV index is 3. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for average individuals.Note: The maximum UV index, 3 during September, leads to the following recommendations:
Take precautions - Protection against sunburn is recommended. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes. Consider carefully! The reflective quality of snow can almost double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Wilkeson, WA
- Average high temperature in September: 67.1°F
The warmest month (with the highest average high temperature) is August (74.1°F).
The month with the lowest average high temperature is December (39.9°F).
- Average low temperature in September: 46°F
The month with the highest average low temperature is August (49.3°F).
The coldest month (with the lowest average low temperature) is December (29.8°F).
Average pressure in September
Wilkeson, WA
- Average pressure in September: 30"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is August (29.99"Hg).
Average wind speed in September
Wilkeson, WA
- Average wind speed in September: 3.9mph
The windiest month (with the highest average wind speed) is January (5.3mph).
The calmest month (with the lowest average wind speed) is August (3.6mph).
Average humidity in September
Wilkeson, WA
- Average humidity in September: 75%
The months with the highest relative humidity are January and February (87%).
The month with the lowest relative humidity is July (70%).
Average rainfall in September
Wilkeson, WA
- Average rainfall in September: 1.69"
The wettest months (with the highest rainfall) are January and December (6.1").
The driest month (with the least rainfall) is July (0.63").
Average rainfall days in September
Wilkeson, WA
- Average rainfall days in September: 12 days
The month with the highest number of rainy days is March (21.2 days).
The month with the least rainy days is August (7.6 days).
Average snowfall in September
Wilkeson, WA
- Average snowfall in September: 0"
The month with the highest snowfall is February (5.2").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Wilkeson, WA
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is February (6.3 days).
The months with the least snowfall days are June, July, August and October (0 days).
Average daylight in September /
Average sunshine in September
Wilkeson, 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: 9h and 0min
The month with the most sunshine is August (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 4h and 0min).
Average sunshine days in September
Wilkeson, WA
- Average sunshine days in September: 16.5 days
The month with the most sunshine days is July (21.2 days).
The month with the least sunshine days is March (7.8 days).
Average UV index in September
Wilkeson, WA
- Average UV index in September: 3
The month with the highest UV index is July (UV index 5).
The month with the lowest UV index is November (UV index 1).
Average cloud cover in September
Wilkeson, WA
- Average cloud cover in September: 38
The month with the most cloud cover is March (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in September
Wilkeson, WA
- Average visibility in September: 5mi
The months with the highest visibility are April, May, June, July, August, September and October (5mi).
The months with the lowest visibility are January, February, March, November and December (4mi).
