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 introduction of September sees an average high-temperature of a still refreshing 63°F (17.2°C), hardly deviating from August. Throughout the month of September, Clallam Bay sees a steady low-temperature average of 49.5°F (9.7°C).Humidity
In September, the average relative humidity in Clallam Bay, Washington, is 82%.Rainfall
In Clallam Bay, in September, it is raining for 9.9 days, with typically 0.98" (25mm) of accumulated precipitation. In Clallam Bay, during the entire year, the rain falls for 142.6 days and collects up to 19.61" (498mm) of precipitation.Snowfall
Months with snowfall are January through April, September and December. September is the first month it typically snows. Throughout September, in the average 0.1 snowfall days, it receives 0.04" (1mm) of snow. In Clallam Bay, during the entire year, snow falls for 5.1 days and aggregates up to 2.17" (55mm) of snow.Daylight
The average length of the day in September is 12h and 34min.On the first day of September in Clallam Bay, Washington, sunrise is at 6:35 am and sunset at 7:57 pm. On the last day of the month, sunrise is at 7:16 am and sunset at 6:57 pm PDT.
Sunshine
In Clallam Bay, the average sunshine in September is 8.6h.UV index
In September, the average daily maximum UV index in Clallam Bay is 3. A UV Index of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for the average person.Note: The maximum daily UV index of 3 in September converts into the following recommendations:
Proceed with care. Light skin individuals may be exposed to burns in fewer than 30 minutes. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Guard yourself! Snow reflection can almost double the UV radiation from the Sun.
Frequently asked questions
What are September temperatures in Clallam Bay?
What is the average humidity in September in Clallam Bay?
How many days does it rain in September in Clallam Bay?
When does it start to snow in Clallam Bay?
What is the average length of the day in September in Clallam Bay?
When is the sunrise / sunset in September in Clallam Bay?
How many hours of sunshine does Clallam Bay have in September?
What is the UV index intensity in September in Clallam Bay?
Average temperature in September
Clallam Bay, WA
- Average high temperature in September: 63°F
The warmest month (with the highest average high temperature) is August (67.6°F).
The month with the lowest average high temperature is December (42.4°F).
- Average low temperature in September: 49.5°F
The month with the highest average low temperature is August (50.7°F).
The coldest month (with the lowest average low temperature) is February (36°F).
Average pressure in September
Clallam Bay, WA
- Average pressure in September: 30.01"Hg
The month with the highest atmospheric pressure is July (30.07"Hg).
The month with the lowest atmospheric pressure is March (29.98"Hg).
Average wind speed in September
Clallam Bay, WA
- Average wind speed in September: 4.2mph
The windiest month (with the highest average wind speed) is January (7.4mph).
The calmest month (with the lowest average wind speed) is August (3.9mph).
Average humidity in September
Clallam Bay, WA
- Average humidity in September: 82%
The months with the highest relative humidity are January and December (87%).
The months with the lowest relative humidity are May, July and August (80%).
Average rainfall in September
Clallam Bay, WA
- Average rainfall in September: 0.98"
The wettest month (with the highest rainfall) is January (3.66").
The driest month (with the least rainfall) is July (0.28").
Average rainfall days in September
Clallam Bay, WA
- Average rainfall days in September: 9.9 days
The month with the highest number of rainy days is November (16.5 days).
The month with the least rainy days is August (5.1 days).
Average snowfall in September
Clallam Bay, WA
- Average snowfall in September: 0.04"
The month with the highest snowfall is January (1.14").
The months with the least snowfall are May, June, July, August, October and November (0").
Average snowfall days in September
Clallam Bay, WA
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is February (1.9 days).
The months with the least snowfall days are May, June, July, August and October (0 days).
Average daylight in September /
Average sunshine in September
Clallam Bay, WA
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 24min).
- Average sunshine in September: 8h and 4min
The months with the most sunshine are July and August (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in September
Clallam Bay, WA
- Average sunshine days in September: 17.5 days
The month with the most sunshine days is July (23 days).
The month with the least sunshine days is November (11.7 days).
Average UV index in September
Clallam Bay, WA
- Average UV index in September: 3
The months with the highest UV index are June, July and August (UV index 4).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Clallam Bay, WA
- Average cloud cover in September: 39
The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in September
Clallam Bay, WA
- Average visibility in September: 5mi
The months with the highest visibility are February, March, April, October, November and December (6mi).
The months with the lowest visibility are January, May, June, July, August and September (5mi).
Clallam Bay, Washington, USA
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