Duluth, WA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Duluth, a community in Clark County, Washington.
Today
94°F
Areas Of Smoke
Areas of smoke. Sunny, with a high near 94. North northeast wind 7 to 10 mph.
7-day forecast for Duluth
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 94°F | Areas Of Smoke | 7 to 10 mph NNE | 0% |
| Tonight | 61°F | Smoke | 6 to 9 mph NNW | 0% |
| Wednesday | 97°F | Areas Of Smoke | 5 to 8 mph NNW | 0% |
| Wednesday Night | 62°F | Clear | 3 to 8 mph NNW | 0% |
| Thursday | 96°F | Sunny | 1 to 8 mph NNW | 0% |
| Thursday Night | 59°F | Clear | 2 to 9 mph NNW | 0% |
| Friday | 90°F | Sunny | 1 to 12 mph NW | 0% |
| Friday Night | 57°F | Mostly Clear | 5 to 12 mph NW | 0% |
| Saturday | 84°F | Sunny | 3 to 15 mph NW | 0% |
| Saturday Night | 55°F | Mostly Clear | 5 to 15 mph NW | 0% |
| Sunday | 78°F | Sunny | 5 to 13 mph NW | 0% |
| Sunday Night | 53°F | Mostly Clear | 3 to 13 mph NW | 0% |
| Monday | 79°F | Sunny | 3 to 10 mph NW | 0% |
| Monday Night | 54°F | Mostly Clear | 2 to 12 mph NW | 0% |
Forecast source: National Weather Service (api.weather.gov) for Duluth (45.784, -122.647). Updated through the day.
Growing snapshot for Duluth
Last spring frost
Apr 10
First fall frost
Nov 2
Growing season
209 days
Hardiness zone
8b
More local growing data for Duluth: nearby ZIP 98642 weather · frost dates · planting calendar · Washington frost dates
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Climate data from the nearest NOAA station, Scappoose Ind Ap, Or (8 mi from Duluth). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.