September weather forecastFox Island, WA
September
Weather in September
The first month of the autumn, September, is still a pleasant month in Fox Island, Washington, with an average temperature ranging between max 70.9°F (21.6°C) and min 49.5°F (9.7°C).Temperature
The average high-temperature shows a slight dip in September, from August's warm 78.1°F (25.6°C) to an agreeable 70.9°F (21.6°C). In September, the nighttime temperature lowers to an average of 49.5°F (9.7°C).Humidity
The average relative humidity in September in Fox Island, Washington, is 75%.Rainfall
In September, in Fox Island, the rain falls for 11.9 days. Throughout September, 1.54" (39mm) of precipitation is accumulated. In Fox Island, Washington, during the entire year, the rain falls for 172.9 days and collects up to 30.08" (764mm) of precipitation.Snowfall
In Fox Island, snow does not fall in April through October.Daylight
The average length of the day in September is 12h and 32min.On the first day of September in Fox Island, Washington, sunrise is at 6:30 am and sunset at 7:49 pm. On the last day of the month, sunrise is at 7:09 am and sunset at 6:51 pm PDT.
Sunshine
In Fox Island, Washington, the average sunshine in September is 9h.UV index
The average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for ordinary individuals.Note: The UV index of 4 in September translates into these instructions:
Undertake protective steps - Obligation to safeguard skin and eyes from harm is in place. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Fox Island, WA
- Average high temperature in September: 70.9°F
The warmest month (with the highest average high temperature) is August (78.1°F).
The month with the lowest average high temperature is December (43.7°F).
- Average low temperature in September: 49.5°F
The month with the highest average low temperature is August (52.7°F).
The coldest months (with the lowest average low temperature) are February and December (34.3°F).
Average pressure in September
Fox Island, WA
- Average pressure in September: 30.01"Hg
The month with the highest atmospheric pressure is January (30.09"Hg).
The months with the lowest atmospheric pressure are March, August and September (30.01"Hg).
Average wind speed in September
Fox Island, WA
- Average wind speed in September: 4mph
The windiest month (with the highest average wind speed) is March (5.2mph).
The calmest month (with the lowest average wind speed) is August (3.7mph).
Average humidity in September
Fox Island, WA
- Average humidity in September: 75%
The months with the highest relative humidity are January and December (87%).
The month with the lowest relative humidity is July (68%).
Average rainfall in September
Fox Island, WA
- Average rainfall in September: 1.54"
The wettest month (with the highest rainfall) is December (4.69").
The driest month (with the least rainfall) is July (0.39").
Average rainfall days in September
Fox Island, WA
- Average rainfall days in September: 11.9 days
The month with the highest number of rainy days is March (20.1 days).
The month with the least rainy days is August (5 days).
Average snowfall in September
Fox Island, WA
- Average snowfall in September: 0"
The month with the highest snowfall is February (2.28").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Fox Island, WA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (3.2 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
Fox Island, WA
- Average daylight in September: 12h and 30min
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 36min).
- Average sunshine in September: 9h and 0min
The month with the most sunshine is August (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 4h and 0min).
Average sunshine days in September
Fox Island, WA
- Average sunshine days in September: 16.5 days
The month with the most sunshine days is August (23.4 days).
The month with the least sunshine days is February (9 days).
Average UV index in September
Fox Island, 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
Fox Island, WA
- Average cloud cover in September: 36
The month with the most cloud cover is December (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in September
Fox Island, 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, March, April, May, September, October, November and December (5mi).
