Seattle, WA weather in September 1977

Temperature for September 1977

In September 1977 the average high temperature in Seattle, WA was 68.0°F, and this was 3.6°F cooler than the average of 71.5°F. The hottest day in September 1977 was 14 September when the temperature reached 77.0°F. Overnight the average temperature in September is 51.3°F and in 1977 the average overnight temperature was 1.8°F cooler at 49.5°F.

Precipitation for September 1977

In September the average monthly rainfall in Seattle, WA is 1.89 inches with rain usually falling on 10 days. In September 1977 there was a total of 2.12 inches of rain, that fell on 17 days.