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 manifests an average high-temperature of a still enjoyable 62.6°F (17°C), demonstrating a minor variation from the preceding month. Throughout September, Shelter Bay reports a steady low-temperature average of 53.8°F (12.1°C), slightly lower than its daytime counterpart.Humidity
In Shelter Bay, the average relative humidity in September is 79%.Rainfall
In September, the rain falls for 9.4 days. Throughout September, 0.75" (19mm) of precipitation is accumulated. Throughout the year, in Shelter Bay, there are 132.4 rainfall days, and 8.9" (226mm) of precipitation is accumulated.Snowfall
May through October are months without snowfall in Shelter Bay.Daylight
The average length of the day in September in Shelter Bay, Washington, is 12h and 34min.On the first day of the month, sunrise is at 6:28 am and sunset at 7:50 pm. On the last day of September, in Shelter Bay, Washington, sunrise is at 7:09 am and sunset at 6:50 pm PDT.
Sunshine
In September, the average sunshine in Shelter Bay is 9.5h.UV index
The average daily maximum UV index in September in Shelter Bay is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for the average person.Note: In September, the UV index of 4 transforms into the following advice:
Guard yourself - Precautionary measures against sun damage are advocated. Around midday, solar radiation is most harmful; hence, exposure should be limited. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.
Frequently asked questions
What is the temperature in September in Shelter Bay?
What is the average humidity in September in Shelter Bay?
How many days does it rain in September in Shelter Bay?
When it does not snow in Shelter Bay?
How many hours of daylight does Shelter Bay have in September?
When are sunrise and sunset in September in Shelter Bay?
How many hours of sunshine does Shelter Bay have in September?
What is the UV index intensity in September in Shelter Bay?
Average temperature in September
Shelter Bay, WA
- Average high temperature in September: 62.6°F
The warmest month (with the highest average high temperature) is July (66.6°F).
The month with the lowest average high temperature is December (43.7°F).
- Average low temperature in September: 53.8°F
The month with the highest average low temperature is August (56.1°F).
The coldest month (with the lowest average low temperature) is February (38.5°F).
Average pressure in September
Shelter Bay, WA
- Average pressure in September: 30.01"Hg
The month with the highest atmospheric pressure is January (30.08"Hg).
The month with the lowest atmospheric pressure is March (30"Hg).
Average wind speed in September
Shelter Bay, WA
- Average wind speed in September: 4.7mph
The windiest month (with the highest average wind speed) is November (8.7mph).
The calmest month (with the lowest average wind speed) is August (4.1mph).
Average humidity in September
Shelter Bay, WA
- Average humidity in September: 79%
The month with the highest relative humidity is January (81%).
The month with the lowest relative humidity is July (76%).
Average rainfall in September
Shelter Bay, WA
- Average rainfall in September: 0.75"
The wettest month (with the highest rainfall) is February (1.3").
The driest month (with the least rainfall) is July (0.24").
Average rainfall days in September
Shelter Bay, WA
- Average rainfall days in September: 9.4 days
The month with the highest number of rainy days is December (13.7 days).
The month with the least rainy days is August (6.1 days).
Average snowfall in September
Shelter Bay, WA
- Average snowfall in September: 0"
The month with the highest snowfall is February (2.24").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Shelter Bay, WA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (2.4 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
Shelter 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: 9h and 3min
The month with the most sunshine is July (Average sunshine: 11h and 0min).
The months with the least sunshine are January and December (Average sunshine: 4h and 30min).
Average sunshine days in September
Shelter Bay, WA
- Average sunshine days in September: 17.7 days
The month with the most sunshine days is July (23.3 days).
The month with the least sunshine days is February (11.8 days).
Average UV index in September
Shelter Bay, 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
Shelter Bay, WA
- Average cloud cover in September: 30
The month with the most cloud cover is December (Cloud cover 53).
The month with the least cloud cover is August (Cloud cover 23).
Average visibility in September
Shelter Bay, 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).
Shelter Bay, Washington, USA
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