King County (Seattle)
March
Weather in King County, Washington for March 2027
Your guide to King County weather in March - trends and predictions
Snowfall in King County during March is quite rare, with fewer than 2 snowy days on average.
In general, the average temperature in King County at the beginning of March is 8.7 °C. As the month progressed, temperatures tended to significantly warm up, reaching an average of 12.2 °C by the end of March.
The climate of King County in March is notably wet, with an average of 15 rainy days, and a total of 149.3 mm of precipitation.
Is March a good time to visit King County? check out the best time to travel to King County page.
✨ Is March a good time to visit King County? – Ask the AI Weatherman
Snow Forecast ❄️
Temperatures
Rain 🌧️
More
15
Dry days
15
Rainy days
1
Snow days
10°/3°
Temperatures
13 km/h
Avg max wind
78 %
Avg humidity
King County Weather March
Move between months or click on a day
Temperatures trend during March in King County
See the weather trend as well as the moving average line
March weather in King County day by day
Click on a date for more information
| Date | Weather | Temperatures | Rain | Snow | More |
|---|---|---|---|---|---|
| Mar. 1 |  Patchy rain possible | 10° /2° | 2.3 mm | 0.8 cm | |
| Mar. 2 | Patchy rain possible | 8° /3° | 1.4 mm | 0 cm | |
| Mar. 3 |  Light rain | 8° /3° | 4.2 mm | 0.1 cm | |
| Mar. 4 |  Heavy rain at times | 9° /3° | 5 mm | 0.2 cm | |
| Mar. 5 | Light rain | 9° /3° | 3.4 mm | 0 cm | |
| Mar. 6 |  Moderate rain at times | 9° /2° | 5.7 mm | 0 cm | |
| Mar. 7 | Patchy rain possible | 9° /3° | 1.7 mm | 0 cm | |
| Mar. 8 | Light rain | 10° /2° | 3.7 mm | 0 cm | |
| Mar. 9 | Light rain | 9° /2° | 7.4 mm | 0 cm | |
| Mar. 10 | Light rain | 7° /2° | 4 mm | 0.1 cm | |
| Mar. 11 | Light rain | 10° /2° | 3.1 mm | 0 cm | |
| Mar. 12 | Light rain | 11° /3° | 5 mm | 0 cm | |
| Mar. 13 |  Moderate rain | 9° /3° | 11.9 mm | 2.3 cm | |
| Mar. 14 | Moderate or heavy rain shower | 9° /3° | 8 mm | 0 cm | |
| Mar. 15 | Light rain | 10° /2° | 4.3 mm | 0 cm | |
| Mar. 16 | Light rain | 12° /3° | 4.8 mm | 0 cm | |
| Mar. 17 | Light rain | 13° /4° | 3.3 mm | 0 cm | |
| Mar. 18 | Moderate or heavy rain shower | 13° /5° | 5.7 mm | 0 cm | |
| Mar. 19 | Light rain | 12° /5° | 4.8 mm | 0 cm | |
| Mar. 20 | Moderate rain at times | 11° /5° | 5.8 mm | 0 cm | |
| Mar. 21 | Moderate rain at times | 8° /5° | 6.9 mm | 0 cm | |
| Mar. 22 | Light rain | 11° /4° | 4.6 mm | 0 cm | |
| Mar. 23 | Light rain | 10° /4° | 7.1 mm | 0 cm | |
| Mar. 24 |  Light snow | 11° /5° | 11.5 mm | 1.1 cm | |
| Mar. 25 | Light rain | 12° /5° | 2.5 mm | 0.7 cm | |
| Mar. 26 | Light rain | 14° /5° | 3.5 mm | 0.1 cm | |
| Mar. 27 | Light rain | 13° /4° | 9.4 mm | 0 cm | |
| Mar. 28 | Light rain | 11° /5° | 4.6 mm | 0 cm | |
| Mar. 29 | Patchy rain possible | 12° /3° | 1.1 mm | 0 cm | |
| Mar. 30 | Patchy rain possible | 12° /3° | 1.8 mm | 0 cm | |
| Mar. 31 |  Overcast | 13° /4° | 0.5 mm | 0 cm | |
| Next | |||||
Important Notice
Our weather forecast for King County 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 King County forecast closer to your planned date for the most up-to-date weather information.
Change Month
King County in March - FAQ
What are the expected maximum and minimum temperatures in King County during March?
Prepare for cooler days with highs just around 10° and colder nights, dipping below 3°.
How much rainfall should be expected in King County during March?
Significant rainfall exceeding 149.3 mm is expected in King County during March, occurring over more than 15 days. Preparing for wet conditions is recommended in your planning.
Will it snow in King County in March 2027?
King County typically sees 4.8 cm of snowfall during March.
What are the typical wind conditions in King County during March?
The average wind speed in King County during March is 13 km/h, suggesting breezy to windy conditions, depending on your activities.
King County snow forecast March 2027
Track daily snowfall levels and discover King County’s snowy potential this March ❄️
On average, King County sees 1 snowy days during March, with approximately 4.8 cm of total snowfall.
March rainfall patterns in King County
Explore the daily rainfall trends and prepare for King Countys March weather 💧
Typically, King County has 15 rainy days in March with a total of 149.3 mm of rainfall.
Top locations in King County
Select a location for an accurate weather forecast
More Locations Quick links
More King County weather pages
You are here
Found a mistake?
We appreciate your attention to details. Tell us here.