Temperature for December
In Adak Island, AK during December the average high temperature is 38.0°F. The hottest day on record was December 8, 1950 when the temperature recorded was 55.4°F.

In Adak Island, AK during December the average high temperature is 38.0°F. The hottest day on record was December 8, 1950 when the temperature recorded was 55.4°F.
In December the average monthly rainfall in Adak Island, AK is 2.10 inches with rain usually falling on between 15 and 16 days. 1944 was the driest December with only 0.00 inches of rain falling, and 1978 was the wettest December with 7.50 inches of rain. The wettest single day in December was 27 December 1977 when 1.54 inches of rain fell.
In December it usually snows on between 18 and 19 days. In December there have been some years when thunderstorms have occurred, although there are other years when there hasn't been a thunderstorm in December.