Marblemount, WA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Marblemount, a community in Skagit County, Washington.
Today
59°F
Partly Sunny
Partly sunny. High near 59, with temperatures falling to around 51 in the afternoon. Southwest wind around 1 mph.
7-day forecast for Marblemount
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 59°F | Partly Sunny | 1 mph SW | 4% |
| Tonight | 36°F | Partly Cloudy | 2 mph ENE | 4% |
| Wednesday | 60°F | Patchy Fog then Sunny | 2 mph S | 8% |
| Wednesday Night | 42°F | Light Rain | 1 mph S | 100% |
| Thursday | 53°F | Light Rain | 2 mph SSW | 77% |
| Thursday Night | 40°F | Light Rain | 2 mph SE | 95% |
| Friday | 52°F | Light Rain | 3 mph SSE | 95% |
| Friday Night | 41°F | Light Rain Likely | 3 mph ESE | 59% |
| Saturday | 59°F | Chance Light Rain | 2 to 6 mph E | 34% |
| Saturday Night | 43°F | Rain | 3 to 9 mph SE | 88% |
| Sunday | 52°F | Light Rain | 3 to 9 mph SSW | 88% |
| Sunday Night | 37°F | Chance Light Rain | 3 mph SE | 43% |
| Monday | 55°F | Chance Light Rain | 3 mph E | 50% |
| Monday Night | 40°F | Light Rain | 5 mph ESE | 75% |
Forecast source: National Weather Service (api.weather.gov) for Marblemount (48.542, -121.440). Updated through the day.
Growing snapshot for Marblemount
Last spring frost
Apr 16
First fall frost
Oct 25
Growing season
192 days
Hardiness zone
7a
More local growing data for Marblemount: nearby ZIP 98267 weather · frost dates · planting calendar · Washington frost dates
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Climate data from the nearest NOAA station, Darrington 21 Nne, Wa (13.3 mi from Marblemount). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.