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
In Brush Prairie, Washington, the average high-temperature in September marginally drops from a moderately hot 79.3°F (26.3°C) in August to an agreeable 71.6°F (22°C). The average low-temperature, in Brush Prairie, is 49.1°F (9.5°C).Humidity
In Brush Prairie, the average relative humidity in September is 72%.Rainfall
In Brush Prairie, Washington, during 10.5 rainfall days, 2.01" (51mm) of precipitation is typically accumulated. In Brush Prairie, during the entire year, the rain falls for 177.9 days and collects up to 40.67" (1033mm) of precipitation.Snowfall
April through October are months without snowfall in Brush Prairie, Washington.Daylight
In Brush Prairie, the average length of the day in September is 12h and 31min.On the first day of September in Brush Prairie, sunrise is at 6:31 am and sunset at 7:48 pm. On the last day of the month, sunrise is at 7:07 am and sunset at 6:52 pm PDT.
Sunshine
In Brush Prairie, the average sunshine in September is 9h.UV index
In Brush Prairie, the average daily maximum UV index in September 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 ordinary individuals.Note: The daily maximum UV index of 4 in September interpret into the following advice:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
FAQ
What is the temperature in September in Brush Prairie?
What is the average humidity in September in Brush Prairie?
How many days does it rain in September in Brush Prairie?
When it does not snow in Brush Prairie?
How many hours of daylight does Brush Prairie have in September?
When is the sunrise / sunset in September in Brush Prairie?
How many hours of sunshine does Brush Prairie have in September?
What is the UV index reading in September in Brush Prairie?
Average temperature in September
Brush Prairie, WA
- Average high temperature in September: 71.6°F
The warmest month (with the highest average high temperature) is August (79.3°F).
The month with the lowest average high temperature is December (42.6°F).
- Average low temperature in September: 49.1°F
The month with the highest average low temperature is August (52°F).
The coldest month (with the lowest average low temperature) is December (32.7°F).
Average pressure in September
Brush Prairie, WA
- Average pressure in September: 30.01"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is August (30"Hg).
Average wind speed in September
Brush Prairie, WA
- Average wind speed in September: 4mph
The windiest month (with the highest average wind speed) is January (6.1mph).
The calmest month (with the lowest average wind speed) is August (3.8mph).
Average humidity in September
Brush Prairie, WA
- Average humidity in September: 72%
The month with the highest relative humidity is February (86%).
The month with the lowest relative humidity is August (67%).
Average rainfall in September
Brush Prairie, WA
- Average rainfall in September: 2.01"
The wettest month (with the highest rainfall) is January (6.06").
The driest month (with the least rainfall) is July (0.35").
Average rainfall days in September
Brush Prairie, WA
- Average rainfall days in September: 10.5 days
The month with the highest number of rainy days is March (20.3 days).
The month with the least rainy days is August (5.1 days).
Average snowfall in September
Brush Prairie, WA
- Average snowfall in September: 0"
The month with the highest snowfall is February (2.76").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Brush Prairie, WA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (3.7 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Brush Prairie, WA
- Average daylight in September: 12h and 31min
The month with the longest days is June (Average daylight: 15h and 40min).
The month with the shortest days is December (Average daylight: 8h and 45min).
- Average sunshine in September: 9h and 0min
The month with the most sunshine is August (Average sunshine: 10h and 48min).
The months with the least sunshine are January and February (Average sunshine: 3h and 48min).
Average sunshine days in September
Brush Prairie, WA
- Average sunshine days in September: 17.5 days
The month with the most sunshine days is July (24.1 days).
The month with the least sunshine days is February (8.2 days).
Average UV index in September
Brush Prairie, 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
Brush Prairie, WA
- Average cloud cover in September: 36
The month with the most cloud cover is February (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 26).
Average visibility in September
Brush Prairie, WA
- Average visibility in September: 5mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (5mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (5mi).
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