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's arrival brings a noticeable temperature shift, dropping from an enjoyable 65.8°F (18.8°C) in August to a cool 50.9°F (10.5°C). Fort Yukon's temperature lowers to a mean of 36.5°F (2.5°C) during the nights in September.Humidity
The average relative humidity in September is 72%.Rainfall
In Fort Yukon, Alaska, during September, the rain falls for 9.5 days and regularly aggregates up to 0.71" (18mm) of precipitation. Throughout the year, there are 63.3 rainfall days, and 6.57" (167mm) 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 2.2 snowfall days, it receives 0.71" (18mm) of snow. In Fort Yukon, during the entire year, snow falls for 96.1 days and aggregates up to 20.63" (524mm) of snow.Daylight
In September, the average length of the day is 13h and 5min.On the first day of the month, sunrise is at 6:17 am and sunset at 9:03 pm. On the last day of September, sunrise is at 7:52 am and sunset at 7:09 pm AKDT.
Sunshine
In September, the average sunshine is 7.2h.UV index
January through March, September through December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a low health risk from unsafe exposure to UV radiation for average individuals.Note: In September, the maximum UV index of 1 transforms into these recommendations:
Infants, children, and people with sensitive skin should always have protection against lengthy periods of sun exposure. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. Be alert to the fact! The reflection from snow can nearly double the UV radiation of the Sun.
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 in Fort Yukon?
How much does it rain in September?
When does it start to snow in Fort Yukon?
How many hours of daylight does Fort Yukon have in September?
What time are sunrise and sunset in September?
How long on average sun shines in September?
What are the months with the lowest UV index?
What is the UV index reading in September?
Average temperature in September
Fort Yukon, AK
- Average high temperature in September: 50.9°F
The warmest month (with the highest average high temperature) is July (74.3°F).
The month with the lowest average high temperature is January (-6.3°F).
- Average low temperature in September: 36.5°F
The month with the highest average low temperature is July (54.7°F).
The coldest month (with the lowest average low temperature) is January (-18°F).
Average pressure in September
Fort Yukon, AK
- Average pressure in September: 29.79"Hg
The month with the highest atmospheric pressure is February (30.03"Hg).
The month with the lowest atmospheric pressure is September (29.79"Hg).
Average wind speed in September
Fort Yukon, AK
- Average wind speed in September: 5.5mph
The windiest month (with the highest average wind speed) is June (6.5mph).
The calmest months (with the lowest average wind speed) are January, February and December (4.3mph).
Average humidity in September
Fort Yukon, AK
- Average humidity in September: 72%
The months with the highest relative humidity are January, February and March (96%).
The month with the lowest relative humidity is June (44%).
Average rainfall in September
Fort Yukon, AK
- Average rainfall in September: 0.71"
The wettest month (with the highest rainfall) is August (1.18").
The driest month (with the least rainfall) is February (0.28").
Average rainfall days in September
Fort Yukon, AK
- Average rainfall days in September: 9.5 days
The month with the highest number of rainy days is August (11.7 days).
The month with the least rainy days is February (0.6 days).
Average snowfall in September
Fort Yukon, AK
- Average snowfall in September: 0.71"
The month with the highest snowfall is November (3.58").
The months with the least snowfall are June, July and August (0").
Average snowfall days in September
Fort Yukon, AK
- Average snowfall days in September: 2.2 days
The month with the highest number of snowfall days is March (14.9 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Fort Yukon, 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: 7h and 1min
The month with the most sunshine is May (Average sunshine: 10h and 54min).
The month with the least sunshine is June (Average sunshine: 1h and 0min).
Average sunshine days in September
Fort Yukon, AK
- Average sunshine days in September: 18.3 days
The month with the most sunshine days is June (21.4 days).
The month with the least sunshine days is April (14.7 days).
Average UV index in September
Fort Yukon, AK
- Average UV index in September: 1
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, March, September, October, November and December (UV index 1).
Average cloud cover in September
Fort Yukon, AK
- Average cloud cover in September: 50
The month with the most cloud cover is April (Cloud cover 73).
The month with the least cloud cover is June (Cloud cover 34).
Average visibility in September
Fort Yukon, AK
- Average visibility in September: 6mi
The months with the highest visibility are May, June, July, August and September (6mi).
The months with the lowest visibility are January, February and December (2mi).
Fort Yukon, Alaska, USA
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