Marietta-Alderwood, WA Weather & Growing Conditions
Today
53°F
Partly Sunny then Light Rain Likely
Rain likely after 4pm. Partly sunny. High near 53, with temperatures falling to around 51 in the afternoon. Southeast wind 3 to 14 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 53°F | Partly Sunny then Light Rain Likely | 3 to 14 mph SE | 56% |
| Tonight | 49°F | Light Rain | 16 to 24 mph S | 92% |
| Thursday | 53°F | Mostly Sunny | 13 to 16 mph SSE | 13% |
| Thursday Night | 49°F | Light Rain | 13 to 31 mph SE | 94% |
| Friday | 52°F | Light Rain | 18 to 32 mph SE | 94% |
| Friday Night | 49°F | Light Rain Likely | 8 to 18 mph SE | 70% |
| Saturday | 57°F | Chance Light Rain | 7 to 18 mph ESE | 34% |
| Saturday Night | 50°F | Light Rain | 18 to 32 mph SSE | 84% |
| Sunday | 53°F | Light Rain Likely | 6 to 24 mph S | 59% |
| Sunday Night | 46°F | Slight Chance Light Rain | 7 mph SE | 15% |
| Monday | 52°F | Chance Light Rain | 6 to 9 mph E | 46% |
| Monday Night | 49°F | Light Rain Likely | 9 to 28 mph SE | 66% |
| Tuesday | 54°F | Light Rain Likely | 18 to 28 mph SE | 66% |
| Tuesday Night | 50°F | Light Rain Likely | 18 to 24 mph SE | 60% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Marietta-Alderwood, WA
Last spring frost
Apr 1
First fall frost
Nov 2
Growing season
216 days
Hardiness zone
8b
Explore more for Marietta-Alderwood, WA: full frost dates · planting calendar · Washington frost dates
Climate data from the nearest NOAA station, Bellingham 3 Ssw, Wa (7.9 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.