September weather forecast
Fairbanks, MN

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Weather in September

The first month of the autumn, September, is still a refreshing month in Fairbanks, Minnesota, with an average temperature varying between 46.9°F (8.3°C) and 65.1°F (18.4°C).

Temperature

The onset of September comes with a shift in the average high-temperature, falling from a moderately hot 74.1°F (23.4°C) in August to a comfortable 65.1°F (18.4°C). During the month of September, an average temperature of 46.9°F (8.3°C) is noted during the nights.

Humidity

In September, the average relative humidity is 78%.

Rainfall

In Fairbanks, during September, the rain falls for 11.8 days and regularly aggregates up to 1.65" (42mm) of precipitation. Throughout the year, there are 100.2 rainfall days, and 17.83" (453mm) of precipitation is accumulated.

Snowfall

June through September are months without snowfall.

Daylight

The average length of the day in September is 12h and 33min.
On the first day of September, sunrise is at 6:27 am and sunset at 7:47 pm. On the last day of the month, sunrise is at 7:06 am and sunset at 6:48 pm CDT.

Sunshine

The average sunshine in September is 7.9h.

UV index

In September, the average daily maximum UV index is 3. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for ordinary individuals.
Note: In September, the maximum UV index of 3 suggests this advice:
Exercise prudence. Persons with fair skin could be burned in under 30 minutes. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
Updated: Aug 19, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average September temperature?

In Fairbanks, in September, the average high-temperature is 65.1°F (18.4°C), and the average low-temperature is 46.9°F (8.3°C).

What is the average humidity in September in Fairbanks?

In September, the average relative humidity is 78%.

How many days does it rain in September?

In Fairbanks, in September, during 11.8 rainfall days, 1.65" (42mm) of precipitation is typically accumulated.

When it does not snow?

In Fairbanks, snow does not fall in June through September.

Does it snow in September?

In Fairbanks, in September, it doesn't snow. In October, it regularly snows.

What is the average length of the day in September?

In September, the average day length is 12h and 33min.

When are sunrise and sunset in September?

On the first day of September, sunrise is at 6:27 am and sunset at 7:47 pm. On the last day of the month, sunrise is at 7:06 am and sunset at 6:48 pm CDT.

How long on average sun shines in September?

The average sunshine duration in September is 7.9h.

What is the UV index intensity in September?

The average daily maximum UV index in September is 3. A UV Index value of 3 to 5 symbolizes a moderate health threat from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Fairbanks, MN

Average temperature in September - Fairbanks, MN
  • Average high temperature in September: 65.1°F

The warmest month (with the highest average high temperature) is July (76.1°F).
The month with the lowest average high temperature is January (14.4°F).

  • Average low temperature in September: 46.9°F

The month with the highest average low temperature is July (55.9°F).
The coldest month (with the lowest average low temperature) is January (0°F).

Average pressure in September
Fairbanks, MN

Average pressure in September - Fairbanks, MN
  • Average pressure in September: 29.98"Hg

The month with the highest atmospheric pressure is February (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).

Average wind speed in September
Fairbanks, MN

Average wind speed in September - Fairbanks, MN
  • Average wind speed in September: 8mph

The windiest month (with the highest average wind speed) is April (9.1mph).
The calmest month (with the lowest average wind speed) is August (6.9mph).

Average humidity in September
Fairbanks, MN

Average humidity in September - Fairbanks, MN
  • Average humidity in September: 78%

The month with the highest relative humidity is January (93%).
The month with the lowest relative humidity is May (72%).

Average rainfall in September
Fairbanks, MN

Average rainfall in September - Fairbanks, MN
  • Average rainfall in September: 1.65"

The wettest month (with the highest rainfall) is July (2.24").
The driest month (with the least rainfall) is January (0.75").

Average rainfall days in September
Fairbanks, MN

Average rainfall days in September - Fairbanks, MN
  • Average rainfall days in September: 11.8 days

The month with the highest number of rainy days is June (13.1 days).
The month with the least rainy days is January (1.4 days).

Average snowfall in September
Fairbanks, MN

Average snowfall in September - Fairbanks, MN
  • Average snowfall in September: 0"

The month with the highest snowfall is December (7.05").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in September
Fairbanks, MN

Average snowfall days in September - Fairbanks, MN
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (17.5 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in September /
Average sunshine in September
Fairbanks, MN

Average daylight in September / Average sunshine in September - Fairbanks, MN
  • Average daylight in September: 12h and 3min

The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).

  • Average sunshine in September: 7h and 5min

The month with the most sunshine is July (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 2h and 6min).

Average sunshine days in September
Fairbanks, MN

Average sunshine days in September - Fairbanks, MN
  • Average sunshine days in September: 17.1 days

The month with the most sunshine days is August (18.3 days).
The month with the least sunshine days is March (12.5 days).

Average UV index in September
Fairbanks, MN

Average UV index in September - Fairbanks, MN
  • Average UV index in September: 3

The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 1).

Average cloud cover in September
Fairbanks, MN

Average cloud cover in September - Fairbanks, MN
  • Average cloud cover in September: 44

The month with the most cloud cover is January (Cloud cover 80).
The month with the least cloud cover is July (Cloud cover 36).

Average visibility in September
Fairbanks, MN

Average visibility in September - Fairbanks, MN
  • Average visibility in September: 5mi

The months with the highest visibility are May, June, July and October (6mi).
The months with the lowest visibility are January, February, March and December (4mi).

Fairbanks, Minnesota, USA

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