September weather forecastSpangle, WA
September
Weather in September
The first month of the autumn, September, is still a pleasant month in Spangle, Washington, with an average temperature varying between 52.2°F (11.2°C) and 72.5°F (22.5°C).Temperature
The onset of September results in a decrease in the average high-temperature, receding from a moderately hot 83.5°F (28.6°C) in August to a pleasant 72.5°F (22.5°C). Spangle, in the month of September, anticipates a consistent average low-temperature of 52.2°F (11.2°C).Humidity
In September, the average relative humidity in Spangle is 46%.Rainfall
In Spangle, in September, it is raining for 6.5 days, with typically 0.59" (15mm) of accumulated precipitation. In Spangle, Washington, during the entire year, the rain falls for 114.1 days and collects up to 14.88" (378mm) of precipitation.Snowfall
Months with snowfall are January through May, September through December. September is the first month it typically snows in Spangle, Washington. Throughout September, in the average 0.2 snowfall days, it receives 0.16" (4mm) of snow. In Spangle, Washington, during the entire year, snow falls for 53 days and aggregates up to 29.69" (754mm) of snow.Daylight
The average length of the day in September in Spangle is 12h and 32min.On the first day of the month, sunrise is at 6:09 am and sunset at 7:29 pm. On the last day of September, in Spangle, sunrise is at 6:48 am and sunset at 6:30 pm PDT.
Sunshine
In September, the average sunshine in Spangle, Washington, is 10.2h.UV index
The average daily maximum UV index in September in Spangle is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for the ordinary person.Note: The maximum daily UV index of 4 during September translates into the following directions:
Take precautions. Light skin individuals may get burned in less than 30 minutes. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Mark this! Snow reflection can nearly double the UV radiation intensity from the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Spangle, WA
- Average high temperature in September: 72.5°F
The warmest month (with the highest average high temperature) is August (83.5°F).
The month with the lowest average high temperature is December (32.7°F).
- Average low temperature in September: 52.2°F
The month with the highest average low temperature is August (59.9°F).
The coldest month (with the lowest average low temperature) is December (23°F).
Average pressure in September
Spangle, WA
- Average pressure in September: 29.96"Hg
The month with the highest atmospheric pressure is January (30.19"Hg).
The month with the lowest atmospheric pressure is August (29.9"Hg).
Average wind speed in September
Spangle, WA
- Average wind speed in September: 6.6mph
The windiest month (with the highest average wind speed) is March (8.3mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).
Average humidity in September
Spangle, WA
- Average humidity in September: 46%
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is August (37%).
Average rainfall in September
Spangle, WA
- Average rainfall in September: 0.59"
The wettest months (with the highest rainfall) are January, March and December (1.85").
The driest month (with the least rainfall) is July (0.28").
Average rainfall days in September
Spangle, WA
- Average rainfall days in September: 6.5 days
The months with the highest number of rainy days are March and April (14.1 days).
The month with the least rainy days is July (4.5 days).
Average snowfall in September
Spangle, WA
- Average snowfall in September: 0.16"
The month with the highest snowfall is January (8.27").
The months with the least snowfall are June, July and August (0").
Average snowfall days in September
Spangle, WA
- Average snowfall days in September: 0.2 days
The month with the highest number of snowfall days is January (13.4 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Spangle, WA
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).
- Average sunshine in September: 10h and 12min
The month with the most sunshine is August (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 3h and 54min).
Average sunshine days in September
Spangle, WA
- Average sunshine days in September: 21.9 days
The month with the most sunshine days is July (24.9 days).
The month with the least sunshine days is March (11.7 days).
Average UV index in September
Spangle, WA
- Average UV index in September: 4
The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in September
Spangle, WA
- Average cloud cover in September: 20
The months with the most cloud cover are January and December (Cloud cover 59).
The month with the least cloud cover is July (Cloud cover 12).
Average visibility in September
Spangle, WA
- Average visibility in September: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The month with the lowest visibility is January (4mi).
