Harman US

Duluth, WA Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Duluth, a community in Clark County, Washington.

This Afternoon
61°F
Mostly Cloudy
Mostly cloudy. High near 61, with temperatures falling to around 56 in the afternoon. North northwest wind around 2 mph.

7-day forecast for Duluth

WhenTempForecastWindPrecip
This Afternoon 61°F Mostly Cloudy 2 mph NNW 13%
Tonight 38°F Areas Of Fog 1 mph ESE 5%
Wednesday 57°F Areas Of Fog then Chance Light Rain 0 to 5 mph SE 52%
Wednesday Night 45°F Light Rain 3 to 7 mph SSE 95%
Thursday 57°F Chance Light Rain then Partly Sunny 5 mph S 33%
Thursday Night 44°F Light Rain Likely 2 to 7 mph SE 66%
Friday 57°F Light Rain Likely 3 to 7 mph SE 66%
Friday Night 45°F Slight Chance Light Rain 3 mph ESE 24%
Saturday 63°F Partly Sunny then Slight Chance Light Rain 2 to 6 mph SSE 18%
Saturday Night 48°F Light Rain Likely 6 to 17 mph SSE 71%
Sunday 58°F Light Rain Likely 2 to 14 mph SSW 71%
Sunday Night 43°F Slight Chance Light Rain 3 mph ENE 23%
Monday 58°F Chance Light Rain 6 mph ESE 50%
Monday Night 45°F Light Rain Likely 5 to 14 mph SE 57%

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

Nearby towns & communities

All Washington locations ›

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 Nov 3, 2026.