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
As August makes way for September, Prevost's average high-temperature eases from a pleasant 68.4°F (20.2°C) to a comfortable 63°F (17.2°C). During the nights in September, Prevost experiences a consistent average temperature of 53.2°F (11.8°C).Humidity
In Prevost, the average relative humidity in September is 79%.Rainfall
In Prevost, in September, during 4.9 rainfall days, 0.24" (6mm) of precipitation is typically accumulated. In Prevost, Washington, during the entire year, the rain falls for 72.5 days and collects up to 6.42" (163mm) of precipitation.Snowfall
In Prevost, snow does not fall in April through October.Daylight
The average length of the day in September is 12h and 34min.On the first day of September, sunrise is at 6:31 am and sunset at 7:54 pm. On the last day of the month, sunrise is at 7:12 am and sunset at 6:52 pm PDT.
Sunshine
The average sunshine in September in Prevost is 9.6h.UV index
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 average individuals.Note: In September, a daily UV index of 4 turns into the following recommendations:
Prioritize safety - The need to safeguard skin and eyes from harm is emphasized. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.
Frequently asked questions
What are September temperatures in Prevost?
What is the average humidity in September in Prevost?
How much does it rain in Prevost in September?
When it does not snow in Prevost?
How many hours of daylight does Prevost have in September?
When is the sunrise / sunset in September in Prevost?
How long on average sun shines in September in Prevost?
What is the UV index intensity in September in Prevost?
Average temperature in September
Prevost, WA
- Average high temperature in September: 63°F
The warmest months (with the highest average high temperature) are July and August (68.4°F).
The month with the lowest average high temperature is December (43.3°F).
- Average low temperature in September: 53.2°F
The month with the highest average low temperature is August (56.7°F).
The coldest month (with the lowest average low temperature) is February (37.9°F).
Average pressure in September
Prevost, WA
- Average pressure in September: 30.01"Hg
The months with the highest atmospheric pressure are January and July (30.06"Hg).
The month with the lowest atmospheric pressure is March (29.99"Hg).
Average wind speed in September
Prevost, WA
- Average wind speed in September: 4.2mph
The windiest month (with the highest average wind speed) is November (7.3mph).
The calmest month (with the lowest average wind speed) is August (3.7mph).
Average humidity in September
Prevost, WA
- Average humidity in September: 79%
The month with the highest relative humidity is January (83%).
The month with the lowest relative humidity is July (73%).
Average rainfall in September
Prevost, WA
- Average rainfall in September: 0.24"
The wettest month (with the highest rainfall) is January (1.46").
The driest months (with the least rainfall) are July and August (0.12").
Average rainfall days in September
Prevost, WA
- Average rainfall days in September: 4.9 days
The month with the highest number of rainy days is December (8.6 days).
The month with the least rainy days is August (2.3 days).
Average snowfall in September
Prevost, WA
- Average snowfall in September: 0"
The month with the highest snowfall is February (2.09").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Prevost, WA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (2.8 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
Prevost, WA
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 16h and 6min).
The month with the shortest days is December (Average daylight: 8h and 24min).
- Average sunshine in September: 9h and 4min
The month with the most sunshine is July (Average sunshine: 11h and 24min).
The months with the least sunshine are January and December (Average sunshine: 4h and 30min).
Average sunshine days in September
Prevost, WA
- Average sunshine days in September: 24.2 days
The month with the most sunshine days is August (28.2 days).
The month with the least sunshine days is February (17.4 days).
Average UV index in September
Prevost, WA
- Average UV index in September: 4
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Prevost, WA
- Average cloud cover in September: 28
The month with the most cloud cover is January (Cloud cover 53).
The months with the least cloud cover are July and August (Cloud cover 20).
Average visibility in September
Prevost, WA
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Prevost, Washington, USA
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