Big Lake
Alaska, USA
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Big Lake, AK

The first month of the autumn, September, is still a mild month in Big Lake, Alaska, with average temperature fluctuating between 36°F (2.2°C) and 55.9°F (13.3°C).


In September, the average high-temperature decreases, from a comfortable 66°F (18.9°C) in August, to a moderate 55.9°F (13.3°C). In September, the average low-temperature is 36°F (2.2°C).


Throughout September, 3.8" (96mm) of precipitation is accumulated. Throughout the year, 21.7" (552.4mm) of rain is accumulated.


In Big Lake, the average length of the day in September is 12.9h.

What is the temperature in September in Big Lake?

In Big Lake, Alaska, in September, the average high-temperature is 55.9°F (13.3°C), and the average low-temperature is 36°F (2.2°C).

How much does it rain in Big Lake in September?

During September, Big Lake regularly aggregates up to 3.8" (96mm) of precipitation.

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

In September, the average length of the day is 12.9h.
Average temperature in September - Big Lake, AK
  • Average high temperature in September: 56°F

The warmest month (with the highest average high temperature) is July (69°F).
The month with the lowest average high temperature is January (16°F).

  • Average low temperature in September: 36°F

The month with the highest average low temperature is July (49°F).
The coldest month (with the lowest average low temperature) is January (-2°F).

Average rainfall in September - Big Lake, AK
  • Average rainfall in September: 3.8"

Wettest months (with the highest rainfall) are August and September (3.8").
The driest month (with the lowest rainfall) is March (0.7").

Average daylight in September - Big Lake, AK
  • Average daylight in September: 12.9h

The month with the longest days is June (Average daylight: 19.3h).
The month with shortest days is December (Average daylight: 5.5h).