Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
September's arrival corresponds with a decrease in average high-temperatures, from August's moderately hot 81.9°F (27.7°C) to a pleasant 71.4°F (21.9°C). Woodruff Mill encounters an average low-temperature of 50.7°F (10.4°C) during September nights.Humidity
In Woodruff Mill, the average relative humidity in September is 55%.Rainfall
In September, the rain falls for 6.6 days. Throughout September, 0.43" (11mm) of precipitation is accumulated. Throughout the year, there are 114.1 rainfall days, and 12.13" (308mm) of precipitation is accumulated.Snowfall
January through April, September through December are months with snowfall. September is the first month it typically snows. Throughout September, in the average 0.2 snowfall days, it receives 0.16" (4mm) of snow. In Woodruff Mill, during the entire year, snow falls for 33.8 days and aggregates up to 19.69" (500mm) of snow.Daylight
The average length of the day in September is 12h and 31min.On the first day of September, sunrise is at 6:26 am and sunset at 7:42 pm. On the last day of the month, sunrise is at 7:02 am and sunset at 6:45 pm PDT.
Sunshine
In Woodruff Mill, the average sunshine in September is 10.8h.UV index
In Woodruff Mill, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for the ordinary person.Note: The maximum UV index of 4 during September translates into these guidelines:
Proceed with care. Light skin individuals may be exposed to burns in fewer than 30 minutes. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed 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
What is the temperature in September?
What is the average humidity in September?
How much does it rain in September?
When does it start snowing?
How many hours of daylight does Woodruff Mill have in September?
When is the sunrise / sunset in September?
How long on average sun shines in September?
What is the UV index reading in September in Woodruff Mill?
Average temperature in September
Woodruff Mill, WA
- Average high temperature in September: 71.4°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is December (36°F).
- Average low temperature in September: 50.7°F
The month with the highest average low temperature is August (55.9°F).
The coldest month (with the lowest average low temperature) is December (25.7°F).
Average pressure in September
Woodruff Mill, WA
- Average pressure in September: 29.98"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is August (29.95"Hg).
Average wind speed in September
Woodruff Mill, WA
- Average wind speed in September: 6.2mph
The windiest month (with the highest average wind speed) is June (7.9mph).
The calmest months (with the lowest average wind speed) are January and December (5.3mph).
Average humidity in September
Woodruff Mill, WA
- Average humidity in September: 55%
The month with the highest relative humidity is January (86%).
The month with the lowest relative humidity is August (47%).
Average rainfall in September
Woodruff Mill, WA
- Average rainfall in September: 0.43"
The wettest month (with the highest rainfall) is January (2.17").
The driest month (with the least rainfall) is July (0.16").
Average rainfall days in September
Woodruff Mill, WA
- Average rainfall days in September: 6.6 days
The month with the highest number of rainy days is March (13.8 days).
The month with the least rainy days is July (3.3 days).
Average snowfall in September
Woodruff Mill, WA
- Average snowfall in September: 0.16"
The month with the highest snowfall is January (6.18").
The months with the least snowfall are May, June, July and August (0").
Average snowfall days in September
Woodruff Mill, WA
- Average snowfall days in September: 0.2 days
The month with the highest number of snowfall days is December (8.9 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Woodruff Mill, WA
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in September: 10h and 5min
The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 4h and 48min).
Average sunshine days in September
Woodruff Mill, WA
- Average sunshine days in September: 21.3 days
The month with the most sunshine days is July (26.3 days).
The month with the least sunshine days is February (12.3 days).
Average UV index in September
Woodruff Mill, WA
- Average UV index in September: 4
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Woodruff Mill, WA
- Average cloud cover in September: 18
The month with the most cloud cover is January (Cloud cover 52).
The month with the least cloud cover is July (Cloud cover 9).
Average visibility in September
Woodruff Mill, 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).
Woodruff Mill, Washington, USA
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