Fort Yukon
Alaska, USA
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Fort Yukon, AK

The first month of the autumn, September, is still a cool month in Fort Yukon, Alaska, with average temperature varying between 32.2°F (0.1°C) and 50.5°F (10.3°C).

Temperature

In September, the average high-temperature plummets, from an enjoyable 66.4°F (19.1°C) in August, to a cool 50.5°F (10.3°C). In September, the average low-temperature is 32.2°F (0.1°C).

Humidity

The average relative humidity in September is 74%.

Rainfall

During September, Fort Yukon regularly aggregates up to 0.8" (20.1mm) of precipitation. Throughout the year, 6.6" (166.8mm) of rain is accumulated.

Snowfall

Months with snowfall in Fort Yukon are January through June, September through December. September is the first month it typically snows in Fort Yukon. Throughout September, Fort Yukon receives 1.7" (43.2mm) of snow. In Fort Yukon, during the entire year, snow aggregates up to 41.8" (1061.7mm).

Daylight

In Fort Yukon, the average length of the day in September is 13.1h.

What is the temperature in September in Fort Yukon?

In Fort Yukon, in September, the average high-temperature is 50.5°F (10.3°C), and the average low-temperature is 32.2°F (0.1°C).

What is the average humidity in September in Fort Yukon?

In September, the average relative humidity in Fort Yukon is 74%.

How much does it rain in Fort Yukon in September?

During September, Fort Yukon regularly aggregates up to 0.8" (20.1mm) of precipitation.

When does it start to snow in Fort Yukon?

September is the first month it typically snows. Throughout September, Fort Yukon receives 1.7" (43.2mm) of snow.

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

In September, the average length of the day in Fort Yukon, Alaska, is 13.1h.
Average temperature in September - Fort Yukon, AK
  • Average high temperature in September: 50.6°F

The warmest month (with the highest average high temperature) is July (73.2°F).
The month with the lowest average high temperature is January (-10.9°F).

  • Average low temperature in September: 32.1°F

The month with the highest average low temperature is July (51.2°F).
The coldest month (with the lowest average low temperature) is January (-27.8°F).

Average humidity in September - Fort Yukon, AK
  • Average humidity in September: 74%

Months with the highest relative humidity are October and November (78%).
The month with the lowest relative humidity is May (49%).

Average rainfall in September - Fort Yukon, AK
  • Average rainfall in September: 0.8"

The wettest month (with the highest rainfall) is August (1.1").
The driest month (with the lowest rainfall) is April (0.2").

Average snowfall in September - Fort Yukon, AK
  • Average snowfall in September: 1.7"

The month with the highest snowfall is October (6.8").
Months with the lowest snowfall are July and August (0").

Average daylight in September - Fort Yukon, AK
  • Average daylight in September: 13.1h

The month with the longest days is June (Average daylight: 23.9h).
The month with shortest days is December (Average daylight: 2.6h).