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United States weather

Weather in Seattle, Washington for March 2026

Your guide to Seattle weather in March - trends and predictions

    Official Weather Alert ⚠️

  • Flood Watch - See hour by hour.

    • Snow Forecast ❄️

  • With an average of 4 snowy days, Seattle usually enjoys a light touch of snow in March.
    According to Seattle snow forecast for March 2026, no snow is expected until the end of the month.

    • Temperatures

  • Until now, March 2026 in Seattle is slightly cooler than the historical average by -0.9 °F.

  • The forecast for the upcoming days in Seattle predicts a temperature of 11.1 °F, which is slightly above the historical average.

  • In general, the average temperature in Seattle at the beginning of March is 9.1 °F. As the month progressed, temperatures tended to moderately rise, reaching an average of 11.1 °F by the end of March.

    • More

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
4
Dry days
Average rainy days
23
Rainy days
Average snowy days
4
Snow days
Average temperatures
11°/3°
Temperatures
Average wind speed
13 km/h
Avg max wind
Average humidity
77 %
Avg humidity

Seattle Weather March

Move between months or click on a day
February
April
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Overcast
11°
2
Patchy rain possible
9°
3
Partly cloudy
8°
4
Heavy rain at times
9°
5
Overcast
9°
6
Moderate rain at times
9°
7
Moderate rain at times
9°
8
Overcast
10°
9
Overcast
10°
10
Overcast
8°
11
Overcast
10°
12
Partly cloudy
12°
13
Patchy rain possible
10°
14
Moderate or heavy rain shower
10°
15
Patchy rain possible
11°
16
Partly cloudy
12°
17
Overcast
13°
18
Weather Alert Patchy rain possible
12°
19
Patchy rain possible
12°
20
Moderate rain
13°
21
Patchy rain possible
8°
22
Partly cloudy
12°
23
Overcast
10°
24
Moderate rain
10°
25
Patchy rain possible
10°
26
Partly cloudy
12°
27
Overcast
12°
28
Partly cloudy
15°
29
Patchy rain possible
10°
30
Patchy rain possible
7°
31
Patchy rain possible
12°

Temperatures trend during March in Seattle

See the weather trend as well as the moving average line

March weather in Seattle day by day

Click on a date for more information
February April
Date Weather Temperatures Rain Snow More
Mar. 1 Overcast
Overcast
 11° /2° 2.3 mm 0.8 cm
Mar. 2 Patchy rain possible
Patchy rain possible
 9° /2° 1.4 mm 0 cm
Mar. 3 Partly cloudy
Partly cloudy
 8° /3° 4.2 mm 0.1 cm
Mar. 4 Heavy rain at times
Heavy rain at times
 9° /2° 5 mm 0.2 cm
Mar. 5 Overcast
Overcast
 9° /2° 3.4 mm 0 cm
Mar. 6 Moderate rain at times
Moderate rain at times
 9° /1° 5.7 mm 0 cm
Mar. 7 Moderate rain at times
Moderate rain at times
 9° /2° 1.7 mm 0 cm
Mar. 8 Overcast
Overcast
 10° /2° 3.7 mm 0 cm
Mar. 9 Overcast
Overcast
 10° /1° 7.4 mm 0 cm
Mar. 10 Overcast
Overcast
 8° /1° 4 mm 0.1 cm
Mar. 11 Overcast
Overcast
 10° /2° 3.1 mm 0 cm
Mar. 12 Partly cloudy
Partly cloudy
 12° /2° 5 mm 0 cm
Mar. 13 Patchy rain possible
Patchy rain possible
 10° /2° 11.9 mm 2.3 cm
Mar. 14 Moderate or heavy rain shower
Moderate or heavy rain shower
 10° /2° 8 mm 0 cm
Mar. 15 Patchy rain possible
Patchy rain possible
 11° /2° 4.3 mm 0 cm
Mar. 16 Partly cloudy
Partly cloudy
 12° /3° 4.8 mm 0 cm
Mar. 17 Overcast
Overcast
 13° /4° 3.3 mm 0 cm
Mar. 18 Patchy rain possible
Patchy rain possible
 12° /10° 4.4 mm 0 cm
Mar. 19 Patchy rain possible
Patchy rain possible
 12° /11° 1.2 mm 0 cm
Mar. 20 Moderate rain
Moderate rain
 13° /10° 7.3 mm 0 cm
Mar. 21 Patchy rain possible
Patchy rain possible
 8° /4° 0.3 mm 0 cm
Mar. 22 Partly cloudy
Partly cloudy
 12° /0° 0 mm 0 cm
Mar. 23 Overcast
Overcast
 10° /4° 0 mm 0 cm
Mar. 24 Moderate rain
Moderate rain
 10° /5° 7.1 mm 0 cm
Mar. 25 Patchy rain possible
Patchy rain possible
 10° /3° 0.8 mm 0 cm
Mar. 26 Partly cloudy
Partly cloudy
 12° /2° 0 mm 0 cm
Mar. 27 Overcast
Overcast
 12° /3° 0 mm 0 cm
Mar. 28 Partly cloudy
Partly cloudy
 15° /5° 0 mm 0 cm
Mar. 29 Patchy rain possible
Patchy rain possible
 10° /5° 3.1 mm 0 cm
Mar. 30 Patchy rain possible
Patchy rain possible
 7° /4° 1.1 mm 0 cm
Mar. 31 Patchy rain possible
Patchy rain possible
 12° /3° 0.1 mm 0 cm
Next
Important Notice
Our weather forecast for Seattle in March is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Seattle forecast closer to your planned date for the most up-to-date weather information.
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Seattle in March - FAQ

What are the expected maximum and minimum temperatures in Seattle during March?

Prepare for cooler days with highs just around 11° and colder nights, dipping below 3°.

How much rainfall should be expected in Seattle during March?

Significant rainfall exceeding 131 mm is expected in Seattle during March, occurring over more than 23 days. Preparing for wet conditions is recommended in your planning.

Will it snow in Seattle in March 2026?

Seattle experiences an average snowfall of 2.808 cm during March, occurring over 4 days.

What are the typical wind conditions in Seattle during March?

The average wind speed in Seattle during March is 13 km/h, suggesting breezy to windy conditions, depending on your activities.

Seattle snow forecast March 2026

Track daily snowfall levels and discover Seattle’s snowy potential this March ❄️
On average, Seattle sees 4 snowy days during March, with approximately 2.8 cm of total snowfall.

March rainfall patterns in Seattle

Explore the daily rainfall trends and prepare for Seattles March weather 💧
Typically, Seattle has 23 rainy days in March with a total of 131 mm of rainfall.

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Get accurate weather forecasts for Seattle, located at latitude 47.606 and longitude -122.332. Stay updated with localized weather information tailored for Seattle.

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