Temperature for May 1990
In May 1990 the average high temperature in Seattle, WA was 65.1°F, and this was 0.6°F cooler than the average of 65.7°F. The hottest day in May 1990 was 5 May when the temperature reached 77.0°F. Overnight the average temperature in May is 46.1°F and in 1990 the average overnight temperature was 0.8°F cooler at 45.3°F.