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 arrival of September signals a shift in temperature, down from a mild 57.9°F (14.4°C) in August to a chilly 47.3°F (8.5°C). An average low-temperature of 37°F (2.8°C) is common during the nights of September.Humidity
In Selawik, the average relative humidity in September is 75%.Rainfall
In Selawik, in September, during 11.5 rainfall days, 1.18" (30mm) of precipitation is typically accumulated. Throughout the year, there are 85.8 rainfall days, and 12.91" (328mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, September through December. September is the first month it typically snows. Throughout September, in the average 2.6 snowfall days, it receives 0.67" (17mm) of snow. In Selawik, during the entire year, snow falls for 90.6 days and aggregates up to 33.58" (853mm) of snow.Daylight
In September, the average length of the day is 13h and 5min.On the first day of September in Selawik, sunrise is at 7:16 am and sunset at 10:02 pm. On the last day of the month, sunrise is at 8:51 am and sunset at 8:07 pm AKDT.
Sunshine
In Selawik, Alaska, the average sunshine in September is 6.1h.UV index
In Selawik, the average daily maximum UV index in September is 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from unsafe exposure to UV radiation for average individuals.Note: In September, the average maximum UV index of 2 translates into the following recommendations:
Apart from children, who require continuous protection, most can endure sun exposure for up to an hour without experiencing burns. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance. Be advised! The UV radiation from the Sun can be almost doubled due to the reflective properties of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Selawik in September?
What is the average humidity in September?
How many days does it rain in September?
When does it start snowing?
How many hours of daylight does Selawik have in September?
What time are sunrise and sunset in September?
How many hours of sunshine does Selawik have in September?
What is the UV index intensity in September?
Average temperature in September
Selawik, AK
- Average high temperature in September: 47.3°F
The warmest month (with the highest average high temperature) is July (62.2°F).
The month with the lowest average high temperature is January (0.7°F).
- Average low temperature in September: 37°F
The month with the highest average low temperature is July (50°F).
The coldest month (with the lowest average low temperature) is January (-8.1°F).
Average pressure in September
Selawik, AK
- Average pressure in September: 29.78"Hg
The month with the highest atmospheric pressure is March (29.96"Hg).
The month with the lowest atmospheric pressure is September (29.78"Hg).
Average wind speed in September
Selawik, AK
- Average wind speed in September: 8.1mph
The windiest month (with the highest average wind speed) is October (8.8mph).
The calmest month (with the lowest average wind speed) is May (7.1mph).
Average humidity in September
Selawik, AK
- Average humidity in September: 75%
The months with the highest relative humidity are February and March (91%).
The month with the lowest relative humidity is June (63%).
Average rainfall in September
Selawik, AK
- Average rainfall in September: 1.18"
The wettest month (with the highest rainfall) is August (1.93").
The driest month (with the least rainfall) is January (0.55").
Average rainfall days in September
Selawik, AK
- Average rainfall days in September: 11.5 days
The month with the highest number of rainy days is August (16.2 days).
The month with the least rainy days is November (1.4 days).
Average snowfall in September
Selawik, AK
- Average snowfall in September: 0.67"
The month with the highest snowfall is February (5.91").
The months with the least snowfall are June, July and August (0").
Average snowfall days in September
Selawik, AK
- Average snowfall days in September: 2.6 days
The month with the highest number of snowfall days is December (14.5 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Selawik, AK
- Average daylight in September: 13h and 1min
The month with the longest days is May (Average daylight: 19h and 48min).
The month with the shortest days is December (Average daylight: 2h and 36min).
- Average sunshine in September: 6h and 1min
The month with the most sunshine is August (Average sunshine: 8h and 0min).
The month with the least sunshine is June (Average sunshine: 0h and 30min).
Average sunshine days in September
Selawik, AK
- Average sunshine days in September: 15.5 days
The month with the most sunshine days is January (20.3 days).
The month with the least sunshine days is August (12.7 days).
Average UV index in September
Selawik, AK
- Average UV index in September: 2
The month with the highest UV index is June (UV index 4).
The months with the lowest UV index are January, February, March, April, November and December (UV index 1).
Average cloud cover in September
Selawik, AK
- Average cloud cover in September: 51
The month with the most cloud cover is February (Cloud cover 61).
The month with the least cloud cover is June (Cloud cover 42).
Average visibility in September
Selawik, AK
- Average visibility in September: 6mi
The months with the highest visibility are May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February, March, April and December (4mi).
Selawik, Alaska, USA
Weather forecast for your location
2. Allow the app to use your location