Seattle, WA weather in December 1978

Temperature for December 1978

In December 1978 the average high temperature in Seattle, WA was 44.6°F, and this was 2.0°F cooler than the average of 46.6°F. The hottest day in December 1978 was 11 December when the temperature reached 53.1°F. Overnight the average temperature in December is 35.6°F and in 1978 the average overnight temperature was 4.0°F cooler at 31.5°F.

Precipitation for December 1978

In December the average monthly rainfall in Seattle, WA is 5.67 inches with rain usually falling on 19 days. In December 1978 there was a total of 2.52 inches of rain, that fell on 18 days.