September weather forecast
Big Lake, AK

Weather in September

The first month of the autumn, September, is still a cool month in Big Lake, Alaska, with an average temperature ranging between max 53.4°F (11.9°C) and min 42.1°F (5.6°C).

Temperature

In Big Lake, the average high-temperature in September marginally drops from an enjoyable 61.5°F (16.4°C) in August to a cool 53.4°F (11.9°C). The average low-temperature, in Big Lake, is 42.1°F (5.6°C).

Humidity

In September, the average relative humidity is 77%.

Rainfall

September is the month with the most rainfall. Rain falls for 15.1 days and accumulates 1.77" (45mm) of precipitation.

Snowfall

January through May, September through December are months with snowfall in Big Lake. September is the first month it typically snows. Throughout September, in the average 0.3 snowfall days, it receives 0.16" (4mm) of snow. In Big Lake, during the entire year, snow falls for 56.8 days and aggregates up to 22.48" (571mm) of snow.

Daylight

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 9:07 pm. On the last day of September, in Big Lake, sunrise is at 8:05 am and sunset at 7:34 pm AKDT.

Sunshine

In September, the average sunshine in Big Lake is 7.8h.

UV index

In Big Lake, the average daily maximum UV index in September is 2. A UV Index of 2, and less, symbolizes a minimal health hazard from unprotected exposure to Sun's UV rays for average individuals.
Note: In September, the average maximum UV index of 2 translate into the following recommendations:
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 Big Lake?

The average high-temperature, in September, is 53.4°F (11.9°C), while the average low-temperature is 42.1°F (5.6°C).

What is the average humidity in September in Big Lake?

The average relative humidity in September in Big Lake, Alaska, is 77%.

What is the rainiest month in Big Lake?

The month with the most rainfall in Big Lake is September, when the rain falls for 15.1 days and typically aggregates up to 1.77" (45mm) of precipitation.

How much does it rain in Big Lake in September?

In Big Lake, Alaska, in September, during 15.1 rainfall days, 1.77" (45mm) of precipitation is typically accumulated.

When does it start snowing in Big Lake?

September is the first month it typically snows in Big Lake. Throughout September, in the average 0.3 snowfall days, it receives 0.16" (4mm) of snow.

How many hours of daylight does Big Lake have in September?

In September, the average day length in Big Lake, Alaska, is 12h and 52min.

When are sunrise and sunset in September in Big Lake?

On the first day of September in Big Lake, Alaska, sunrise is at 6:52 am and sunset at 9:07 pm. On the last day of the month, sunrise is at 8:05 am and sunset at 7:34 pm AKDT.

How many hours of sunshine does Big Lake have in September?

In September, the average sunshine duration in Big Lake is 7.8h.

How high is the UV index in September in Big Lake?

In Big Lake, the average daily maximum UV index in September is 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Big Lake, AK

Average temperature in September - Big Lake, AK
  • Average high temperature in September: 53.4°F

The warmest month (with the highest average high temperature) is July (64.8°F).
The month with the lowest average high temperature is January (19.2°F).

  • Average low temperature in September: 42.1°F

The month with the highest average low temperature is July (50.2°F).
The coldest month (with the lowest average low temperature) is January (10.6°F).

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Average pressure in September
Big Lake, AK

Average pressure in September - Big Lake, 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 (29.68"Hg).

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Average wind speed in September
Big Lake, AK

Average wind speed in September - Big Lake, AK
  • Average wind speed in September: 4.4mph

The windiest month (with the highest average wind speed) is November (4.9mph).
The calmest months (with the lowest average wind speed) are July and August (4.2mph).

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Average humidity in September
Big Lake, AK

Average humidity in September - Big Lake, AK
  • Average humidity in September: 77%

The month with the highest relative humidity is March (88%).
The month with the lowest relative humidity is May (64%).

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Average rainfall in September
Big Lake, AK

Average rainfall in September - Big Lake, AK
  • Average rainfall in September: 1.77"

The wettest month (with the highest rainfall) is September (1.77").
The driest months (with the least rainfall) are April and May (0.59").

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Average rainfall days in September
Big Lake, AK

Average rainfall days in September - Big Lake, AK
  • Average rainfall days in September: 15.1 days

The month with the highest number of rainy days is August (17.4 days).
The month with the least rainy days is February (7.4 days).

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Average snowfall in September
Big Lake, AK

Average snowfall in September - Big Lake, AK
  • Average snowfall in September: 0.16"

The month with the highest snowfall is December (5.67").
The months with the least snowfall are June, July and August (0").

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Average snowfall days in September
Big Lake, AK

Average snowfall days in September - Big Lake, AK
  • Average snowfall days in September: 0.3 days

The month with the highest number of snowfall days is December (11.2 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
Big Lake, AK

Average daylight in September / Average sunshine in September - Big Lake, AK
  • Average daylight in September: 12h and 52min

The month with the longest days is June (Average daylight: 19h and 20min).
The month with the shortest days is December (Average daylight: 5h and 32min).

  • Average sunshine in September: 7h and 48min

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 48min).

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Average sunshine days in September
Big Lake, AK

Average sunshine days in September - Big Lake, AK
  • Average sunshine days in September: 12.2 days

The month with the most sunshine days is January (17 days).
The month with the least sunshine days is August (11.6 days).

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Average UV index in September
Big Lake, AK

Average UV index in September - Big Lake, AK
  • Average UV index in September: 2

The months with the highest UV index are May, June and July (UV index 4).
The month with the lowest UV index is December (UV index 1).

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Average cloud cover in September
Big Lake, AK

Average cloud cover in September - Big Lake, AK
  • Average cloud cover in September: 43

The month with the most cloud cover is December (Cloud cover 45).
The month with the least cloud cover is May (Cloud cover 38).

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Average visibility in September
Big Lake, AK

Average visibility in September - Big Lake, AK
  • Average visibility in September: 6mi

The months with the highest visibility are May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February, March, April and December (5mi).

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