Based on our historical records, temperatures in Seattle typically stay consistent throughout March, with daily highs averaging around 12°C. Nights are cold, with lows around 4°C.

March marks the beginning of spring in Seattle, with temperatures ranging from 39°F to 54°F (4°C to 12°C). Days continue to lengthen, with around 12 hours of daylight. While rain showers are still …

Get the monthly weather forecast for Seattle, WA, including daily high/low, historical averages, to help you plan ahead.

In Seattle during March average daily high temperatures increase from 53°F to 57°F and it is overcast or mostly cloudy about 67% of the time.

This page gives detailed information on the typical March temperature, precipitation, sun, humidity, wind and storms for Seattle. The weather measurements are averages based on climate data gathered at …

Oct 31, 2025 · The chart illustrates March temperature patterns in Seattle, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the …

Weather.com brings you the most accurate monthly weather forecast for Seattle, Washington with average/record and high/low temperatures, precipitation and more.

The average daily temperature expected in Seattle in this month is 12°C (54°F), dropping to an average temperature of 3°C (37°F). Seattle sees up to 5 hours of sunshine per day throughout the month.

Averages and records for weather in Seattle, Washington in the month of March.

March Climate History for Seattle with monthly averages for temperature, rainfall, wind. Also heat index and climate charts.