September weather forecast
Fort Yukon, AK

Weather in September

The first month of the autumn, September, is still a cool month in Fort Yukon, Alaska, with an average temperature varying between 36.5°F (2.5°C) and 50.9°F (10.5°C).

Temperature

In Fort Yukon, the average high-temperature in September declines considerably from an enjoyable 65.8°F (18.8°C) in August to a fresh 50.9°F (10.5°C). In Fort Yukon, the average low-temperature is 36.5°F (2.5°C).

Humidity

In September, the average relative humidity is 72%.

Rainfall

In September, in Fort Yukon, the rain falls for 9.5 days. Throughout September, 0.71" (18mm) of precipitation is accumulated. In Fort Yukon, during the entire year, the rain falls for 63.3 days and collects up to 6.57" (167mm) of precipitation.

Snowfall

January through May, September through December are months with snowfall. September is the first month it typically snows in Fort Yukon, Alaska. Throughout September, in the average 2.2 snowfall days, it receives 0.71" (18mm) of snow. Throughout the year, in Fort Yukon, there are 96.1 snowfall days, and 20.63" (524mm) of snow is accumulated.

Daylight

The average length of the day in September is 13h and 5min.
On the first day of September, sunrise is at 6:15 am and sunset at 9:06 pm. On the last day of the month, sunrise is at 7:50 am and sunset at 7:11 pm AKDT.

Sunshine

The average sunshine in September is 7.2h.

UV index

The months with the lowest UV index in Fort Yukon, Alaska, are January through March, September through December, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a low health risk from unsafe exposure to UV radiation for the ordinary person.
Note: The average daily UV index of 1 in September transform into the following instructions:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the temperature in September in Fort Yukon?

In Fort Yukon, in September, the average high-temperature is 50.9°F (10.5°C), and the average low-temperature is 36.5°F (2.5°C).

What is the average humidity in September in Fort Yukon?

In September, the average relative humidity in Fort Yukon is 72%.

How much does it rain in Fort Yukon in September?

In Fort Yukon, Alaska, in September, during 9.5 rainfall days, 0.71" (18mm) of precipitation is typically accumulated.

When does it start snowing in Fort Yukon?

September is the first month it typically snows. Throughout September, in the average 2.2 snowfall days, it receives 0.71" (18mm) of snow.

What is the average length of the day in September in Fort Yukon?

In Fort Yukon, Alaska, the average day length in September is 13h and 5min.

When are sunrise and sunset in September in Fort Yukon?

On the first day of September in Fort Yukon, Alaska, sunrise is at 6:15 am and sunset at 9:06 pm. On the last day of the month, sunrise is at 7:50 am and sunset at 7:11 pm AKDT.

How many hours of sunshine does Fort Yukon have in September?

In Fort Yukon, the average sunshine duration in September is 7.2h.

When is the lowest UV index in Fort Yukon?

The months with the lowest UV index are January through March, September through December, with an average maximum UV index of 1.

How high is the UV index in September in Fort Yukon?

The average daily maximum UV index in September in Fort Yukon, Alaska, is 1. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Fort Yukon, AK

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).

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Average pressure in September
Fort Yukon, AK

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).

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Average wind speed in September
Fort Yukon, AK

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).

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Average humidity in September
Fort Yukon, AK

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%).

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Average rainfall in September
Fort Yukon, AK

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").

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Average rainfall days in September
Fort Yukon, AK

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).

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Average snowfall in September
Fort Yukon, AK

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").

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Average snowfall days in September
Fort Yukon, AK

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).

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Average daylight in September /
Average sunshine in September
Fort Yukon, AK

Average daylight in September / Average sunshine in September - Fort Yukon, AK
  • Average daylight in September: 13h and 5min

The month with the longest days is May (Average daylight: 19h and 46min).
The month with the shortest days is December (Average daylight: 2h and 37min).

  • Average sunshine in September: 7h and 12min

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).

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Average sunshine days in September
Fort Yukon, AK

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).

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Average UV index in September
Fort Yukon, AK

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).

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Average cloud cover in September
Fort Yukon, AK

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).

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Average visibility in September
Fort Yukon, AK

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).

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