The highest day temperature in March 2026 was 56°F. The lowest night temperature was 32°F. The average values for day and night temperatures during March were 48.4°F и 40.4°F respectivly.

Most of the days in March are gloomy but you can also expect sunny days.

Precipitation total in March for Seattle is 2.3 in. It makes march one of the most rainy months of the year.

The average wind speed in March is 6.1 mph. This value is relatively stable throughout the year.

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Seattle in March is 4.6 hours.