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 start of September involves a subtle temperature drop, shifting from a warm 77.7°F (25.4°C) in August to an agreeable 70.2°F (21.2°C). Cougar receives a consistent average low-temperature of 47.7°F (8.7°C) in September, a substantial dip from the day's heat.Humidity
The average relative humidity in September is 74%.Rainfall
In Cougar, Washington, in September, it is raining for 11.6 days, with typically 2.32" (59mm) of accumulated precipitation. In Cougar, Washington, during the entire year, the rain falls for 182.3 days and collects up to 48.11" (1222mm) of precipitation.Snowfall
April through October are months without snowfall.Daylight
The average length of the day in September is 12h and 31min.On the first day of the month, sunrise is at 6:30 am and sunset at 7:46 pm. On the last day of September, sunrise is at 7:07 am and sunset at 6:50 pm PDT.
Sunshine
The average sunshine in September is 8.4h.UV index
The average daily maximum UV index in September in Cougar, Washington, is 3. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for the average person.Note: In September, the maximum UV index of 3 translates into these guidelines:
Be vigilant - Suggestions to stave off sun damage are provided. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September in Cougar?
What is the average humidity in September in Cougar?
How much does it rain in Cougar in September?
When it does not snow in Cougar?
How many hours of daylight does Cougar have in September?
When are sunrise and sunset in September in Cougar?
How long on average sun shines in September in Cougar?
What is the UV index reading in September in Cougar?
Average temperature in September
Cougar, WA
- Average high temperature in September: 70.2°F
The warmest month (with the highest average high temperature) is August (77.7°F).
The month with the lowest average high temperature is December (40.6°F).
- Average low temperature in September: 47.7°F
The month with the highest average low temperature is August (50.5°F).
The coldest month (with the lowest average low temperature) is December (30.7°F).
Average pressure in September
Cougar, 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
Cougar, WA
- Average wind speed in September: 4.2mph
The windiest month (with the highest average wind speed) is January (6.1mph).
The calmest month (with the lowest average wind speed) is August (4.1mph).
Average humidity in September
Cougar, WA
- Average humidity in September: 74%
The month with the highest relative humidity is February (88%).
The months with the lowest relative humidity are July and August (69%).
Average rainfall in September
Cougar, WA
- Average rainfall in September: 2.32"
The wettest month (with the highest rainfall) is January (7.64").
The driest month (with the least rainfall) is July (0.43").
Average rainfall days in September
Cougar, WA
- Average rainfall days in September: 11.6 days
The month with the highest number of rainy days is March (20.8 days).
The month with the least rainy days is August (5.6 days).
Average snowfall in September
Cougar, WA
- Average snowfall in September: 0"
The month with the highest snowfall is February (4.02").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Cougar, WA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (4.2 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
Cougar, 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: 8h and 2min
The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 3h and 12min).
Average sunshine days in September
Cougar, WA
- Average sunshine days in September: 17.1 days
The month with the most sunshine days is August (23.4 days).
The month with the least sunshine days is February (8.1 days).
Average UV index in September
Cougar, WA
- Average UV index in September: 3
The months with the highest UV index are June and July (UV index 5).
The month with the lowest UV index is November (UV index 1).
Average cloud cover in September
Cougar, WA
- Average cloud cover in September: 41
The months with the most cloud cover are February and December (Cloud cover 66).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in September
Cougar, WA
- Average visibility in September: 5mi
The months with the highest visibility are June, July, August, September and October (5mi).
The months with the lowest visibility are January, February, March, April, May, November and December (4mi).
Cougar, Washington, USA
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