Marrowstone, WA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Marrowstone, a community in Jefferson County, Washington.
This Afternoon
55°F
Chance Light Rain
A chance of rain after 4pm. Mostly cloudy, with a high near 55. Southeast wind around 13 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Marrowstone
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 55°F | Chance Light Rain | 13 mph SE | 52% |
| Tonight | 47°F | Light Rain Likely then Mostly Cloudy | 3 to 18 mph S | 69% |
| Thursday | 55°F | Partly Sunny | 5 to 12 mph SSE | 4% |
| Thursday Night | 50°F | Mostly Cloudy then Light Rain | 12 to 20 mph SSE | 81% |
| Friday | 54°F | Light Rain | 20 to 29 mph SSE | 81% |
| Friday Night | 51°F | Chance Light Rain | 10 to 21 mph SSE | 43% |
| Saturday | 59°F | Chance Light Rain | 10 to 20 mph SSE | 42% |
| Saturday Night | 51°F | Light Rain | 17 to 25 mph SSE | 90% |
| Sunday | 54°F | Light Rain Likely | 5 to 17 mph S | 72% |
| Sunday Night | 46°F | Mostly Cloudy | 5 mph ESE | 13% |
| Monday | 54°F | Mostly Cloudy then Chance Light Rain | 2 to 15 mph SE | 32% |
| Monday Night | 50°F | Light Rain Likely | 15 to 24 mph SSE | 62% |
| Tuesday | 55°F | Light Rain Likely | 21 to 28 mph SSE | 67% |
| Tuesday Night | 51°F | Light Rain Likely | 18 to 22 mph SSE | 63% |
Forecast source: National Weather Service (api.weather.gov) for Marrowstone (48.032, -122.684). Updated through the day.
Growing snapshot for Marrowstone
Last spring frost
Mar 1
First fall frost
Nov 28
Growing season
274 days
Hardiness zone
9a
More local growing data for Marrowstone: nearby ZIP 98358 weather · frost dates · planting calendar · Washington frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Port Townsend, Wa (5.9 mi from Marrowstone). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.