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
The onset of September brings a small shift in high-temperatures, falling from a warm 74.8°F (23.8°C) in August to a pleasant 68°F (20°C). During September, Prairie Ridge sees a mean low-temperature of 46.8°F (8.2°C).Humidity
In September, the average relative humidity is 75%.Rainfall
In Prairie Ridge, Washington, in September, it is raining for 12.6 days, with typically 1.89" (48mm) of accumulated precipitation. Throughout the year, in Prairie Ridge, there are 187.8 rainfall days, and 37.56" (954mm) of precipitation is accumulated.Snowfall
May through October are months without snowfall in Prairie Ridge.Daylight
In Prairie Ridge, the average length of the day in September is 12h and 32min.On the first day of September, sunrise is at 6:28 am and sunset at 7:47 pm. On the last day of the month, sunrise is at 7:07 am and sunset at 6:49 pm PDT.
Sunshine
In Prairie Ridge, the average sunshine in September is 9.1h.UV index
In Prairie Ridge, the average daily maximum UV index in September is 3. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for the average person.Note: The maximum UV index of 3 during September leads to these instructions:
Take necessary precautions - Suggestions to elude sunburn are provided. Direct Sun exposure should be minimized especially during midday when radiation is most intense. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.
Frequently asked questions
What is the average September temperature in Prairie Ridge?
What is the average humidity in September in Prairie Ridge?
How many days does it rain in September in Prairie Ridge?
When it does not snow in Prairie Ridge?
What is the average length of the day in September in Prairie Ridge?
When are sunrise and sunset in September in Prairie Ridge?
How many hours of sunshine does Prairie Ridge have in September?
What is the UV index intensity in September in Prairie Ridge?
Average temperature in September
Prairie Ridge, WA
- Average high temperature in September: 68°F
The warmest month (with the highest average high temperature) is August (74.8°F).
The month with the lowest average high temperature is December (41.2°F).
- Average low temperature in September: 46.8°F
The month with the highest average low temperature is August (49.6°F).
The coldest month (with the lowest average low temperature) is December (31.3°F).
Average pressure in September
Prairie Ridge, WA
- Average pressure in September: 30.01"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is August (30"Hg).
Average wind speed in September
Prairie Ridge, WA
- Average wind speed in September: 3.8mph
The windiest month (with the highest average wind speed) is January (5mph).
The calmest month (with the lowest average wind speed) is August (3.6mph).
Average humidity in September
Prairie Ridge, 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
Prairie Ridge, WA
- Average rainfall in September: 1.89"
The wettest month (with the highest rainfall) is January (5.47").
The driest month (with the least rainfall) is July (0.51").
Average rainfall days in September
Prairie Ridge, WA
- Average rainfall days in September: 12.6 days
The month with the highest number of rainy days is March (20.8 days).
The month with the least rainy days is August (6.7 days).
Average snowfall in September
Prairie Ridge, WA
- Average snowfall in September: 0"
The month with the highest snowfall is February (2.32").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Prairie Ridge, WA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (3.9 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
Prairie Ridge, WA
- Average daylight in September: 12h and 3min
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 36min).
- Average sunshine in September: 9h and 1min
The month with the most sunshine is August (Average sunshine: 10h and 54min).
The months with the least sunshine are January and December (Average sunshine: 4h and 12min).
Average sunshine days in September
Prairie Ridge, WA
- Average sunshine days in September: 15.7 days
The month with the most sunshine days is August (22.4 days).
The month with the least sunshine days is February (7.9 days).
Average UV index in September
Prairie Ridge, WA
- Average UV index in September: 3
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, October, November and December (UV index 2).
Average cloud cover in September
Prairie Ridge, WA
- Average cloud cover in September: 37
The month with the most cloud cover is December (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 26).
Average visibility in September
Prairie Ridge, WA
- Average visibility in September: 5mi
The month with the highest visibility is August (6mi).
The months with the lowest visibility are January, February, March and December (4mi).
Prairie Ridge, Washington, USA
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