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
With the onset of September, Belfair's climate undergoes a slight change as the average high-temperature moves from a warm 77.4°F (25.2°C) in August to a pleasant 70.3°F (21.3°C). Belfair sees an average low-temperature of 49.8°F (9.9°C) during September.Humidity
In September, the average relative humidity is 75%.Rainfall
In Belfair, Washington, in September, during 11.4 rainfall days, 1.3" (33mm) of precipitation is typically accumulated. In Belfair, during the entire year, the rain falls for 175.2 days and collects up to 30.43" (773mm) of precipitation.Snowfall
In Belfair, snow does not fall in May through October.Daylight
In Belfair, the average length of the day in September is 12h and 32min.On the first day of the month, sunrise is at 6:31 am and sunset at 7:50 pm. On the last day of September, in Belfair, sunrise is at 7:10 am and sunset at 6:51 pm PDT.
Sunshine
In Belfair, the average sunshine in September is 9.2h.UV index
In Belfair, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for the average person.Note: The maximum UV index, 4 during September, leads to the following recommendations:
Take necessary precautions - Protection from skin and eye injury is mandatory. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September in Belfair?
What is the average humidity in September in Belfair?
How much does it rain in Belfair in September?
When it does not snow in Belfair?
What is the average length of the day in September in Belfair?
What time are sunrise and sunset in September in Belfair?
How many hours of sunshine does Belfair have in September?
How high is the UV index in September in Belfair?
Average temperature in September
Belfair, WA
- Average high temperature in September: 70.3°F
The warmest month (with the highest average high temperature) is August (77.4°F).
The month with the lowest average high temperature is December (42.3°F).
- Average low temperature in September: 49.8°F
The month with the highest average low temperature is August (53.2°F).
The coldest month (with the lowest average low temperature) is December (33.8°F).
Average pressure in September
Belfair, WA
- Average pressure in September: 30.02"Hg
The month with the highest atmospheric pressure is January (30.09"Hg).
The month with the lowest atmospheric pressure is March (30.01"Hg).
Average wind speed in September
Belfair, WA
- Average wind speed in September: 4mph
The windiest month (with the highest average wind speed) is March (5.2mph).
The calmest months (with the lowest average wind speed) are July and August (3.5mph).
Average humidity in September
Belfair, WA
- Average humidity in September: 75%
The month with the highest relative humidity is December (88%).
The month with the lowest relative humidity is July (69%).
Average rainfall in September
Belfair, WA
- Average rainfall in September: 1.3"
The wettest month (with the highest rainfall) is December (5").
The driest month (with the least rainfall) is July (0.43").
Average rainfall days in September
Belfair, WA
- Average rainfall days in September: 11.4 days
The month with the highest number of rainy days is March (19.7 days).
The month with the least rainy days is August (6 days).
Average snowfall in September
Belfair, WA
- Average snowfall in September: 0"
The month with the highest snowfall is February (2.91").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Belfair, WA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (3.8 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
Belfair, 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 30min).
- Average sunshine in September: 9h and 1min
The month with the most sunshine is August (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 3h and 48min).
Average sunshine days in September
Belfair, WA
- Average sunshine days in September: 17.1 days
The month with the most sunshine days is August (22.3 days).
The month with the least sunshine days is November (8.7 days).
Average UV index in September
Belfair, 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
Belfair, WA
- Average cloud cover in September: 35
The month with the most cloud cover is December (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 26).
Average visibility in September
Belfair, WA
- Average visibility in September: 5mi
The months with the highest visibility are June, July and August (6mi).
The months with the lowest visibility are January, February, November and December (4mi).
Belfair, Washington, USA
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