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
September brings a minor shift in the average high-temperature, adjusting from a refreshing 60.3°F (15.7°C) in August to a cool 52.5°F (11.4°C). Throughout September, Eagle River registers a consistent average low-temperature of 40.5°F (4.7°C).Humidity
In Eagle River, the average relative humidity in September is 77%.Rainfall
The month with the most rainfall is September, when the rain falls for 15.9 days and typically aggregates up to 1.81" (46mm) of precipitation.Snowfall
January through May, September through December are months with snowfall. September is the first month it typically snows. Throughout September, in the average 0.3 snowfall days, it receives 0.08" (2mm) of snow. Throughout the year, in Eagle River, there are 57.9 snowfall days, and 24.37" (619mm) of snow is accumulated.Daylight
In Eagle River, the average length of the day in September is 12h and 52min.On the first day of the month, sunrise is at 6:52 am and sunset at 9:03 pm. On the last day of September, sunrise is at 8:04 am and sunset at 7:31 pm AKDT.
Sunshine
In Eagle River, the average sunshine in September is 7.9h.UV index
The average daily maximum UV index in September is 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for average individuals.Note: In September, the maximum UV index of 2 translates into these guidelines:
Long-term sun exposure is typically not a concern for most. However, those with sensitive skin, infants, and children must always have protection. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. Be informed! The Sun's UV radiation can be nearly doubled due to the reflection from snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September?
What is the average humidity in September?
What is the rainiest month?
How much does it rain in September?
When does it start to snow?
What is the average length of the day in September?
What time are sunrise and sunset in September?
How many hours of sunshine does Eagle River have in September?
What is the UV index intensity in September?
Average temperature in September
Eagle River, AK
- Average high temperature in September: 52.5°F
The warmest month (with the highest average high temperature) is July (63.1°F).
The month with the lowest average high temperature is January (19°F).
- Average low temperature in September: 40.5°F
The month with the highest average low temperature is July (48.4°F).
The coldest month (with the lowest average low temperature) is January (9.7°F).
Average pressure in September
Eagle River, AK
- Average pressure in September: 29.75"Hg
The month with the highest atmospheric pressure is July (29.96"Hg).
The months with the lowest atmospheric pressure are November and December (29.69"Hg).
Average wind speed in September
Eagle River, AK
- Average wind speed in September: 4.3mph
The windiest months (with the highest average wind speed) are January and December (4.6mph).
The calmest month (with the lowest average wind speed) is July (4.1mph).
Average humidity in September
Eagle River, AK
- Average humidity in September: 77%
The months with the highest relative humidity are February and March (87%).
The month with the lowest relative humidity is May (65%).
Average rainfall in September
Eagle River, AK
- Average rainfall in September: 1.81"
The wettest month (with the highest rainfall) is September (1.81").
The driest month (with the least rainfall) is May (0.63").
Average rainfall days in September
Eagle River, AK
- Average rainfall days in September: 15.9 days
The month with the highest number of rainy days is August (18.3 days).
The month with the least rainy days is January (7.4 days).
Average snowfall in September
Eagle River, AK
- Average snowfall in September: 0.08"
The month with the highest snowfall is December (5.98").
The months with the least snowfall are June, July and August (0").
Average snowfall days in September
Eagle River, AK
- Average snowfall days in September: 0.3 days
The month with the highest number of snowfall days is February (11.3 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Eagle River, AK
- Average daylight in September: 12h and 5min
The month with the longest days is June (Average daylight: 19h and 18min).
The month with the shortest days is December (Average daylight: 5h and 36min).
- Average sunshine in September: 7h and 5min
The month with the most sunshine is May (Average sunshine: 11h and 54min).
The month with the least sunshine is December (Average sunshine: 3h and 54min).
Average sunshine days in September
Eagle River, AK
- Average sunshine days in September: 10.5 days
The month with the most sunshine days is January (17.2 days).
The month with the least sunshine days is August (10.2 days).
Average UV index in September
Eagle River, AK
- Average UV index in September: 2
The months with the highest UV index are June and July (UV index 4).
The month with the lowest UV index is February (UV index 1).
Average cloud cover in September
Eagle River, AK
- Average cloud cover in September: 42
The months with the most cloud cover are April, August and December (Cloud cover 44).
The month with the least cloud cover is May (Cloud cover 37).
Average visibility in September
Eagle River, AK
- Average visibility in September: 6mi
The months with the highest visibility are May, June, July, August, September, October and November (6mi).
The month with the lowest visibility is March (4mi).
Eagle River, Alaska, USA
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