Des Moines, WA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Des Moines, a city in King County, Washington.
Overnight
57°F
Clear
Clear, with a low around 57. North northeast wind around 6 mph.
7-day forecast for Des Moines
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 57°F | Clear | 6 mph NNE | 0% |
| Tuesday | 86°F | Sunny then Areas Of Smoke | 5 to 9 mph N | 0% |
| Tuesday Night | 60°F | Areas Of Smoke | 3 to 8 mph NNE | 0% |
| Wednesday | 91°F | Sunny then Patchy Smoke | 3 to 8 mph N | 0% |
| Wednesday Night | 61°F | Mostly Clear | 1 to 7 mph NNE | 0% |
| Thursday | 91°F | Sunny | 1 to 6 mph NW | 0% |
| Thursday Night | 61°F | Mostly Clear | 6 mph WSW | 0% |
| Friday | 88°F | Sunny | 5 mph SW | 0% |
| Friday Night | 59°F | Mostly Clear | 2 to 7 mph WNW | 0% |
| Saturday | 82°F | Sunny | 5 mph WSW | 0% |
| Saturday Night | 57°F | Mostly Clear | 2 to 7 mph WNW | 1% |
| Sunday | 77°F | Mostly Sunny | 5 mph WSW | 1% |
| Sunday Night | 57°F | Mostly Clear | 5 mph NW | 1% |
| Monday | 77°F | Mostly Sunny | 5 mph WNW | 1% |
Forecast source: National Weather Service (api.weather.gov) for Des Moines (47.389, -122.318). Updated through the day.
Growing snapshot for Des Moines
Last spring frost
Mar 2
First fall frost
Nov 23
Growing season
266 days
Hardiness zone
9a
More local growing data for Des Moines: nearby ZIP 98198 weather · frost dates · planting calendar · Washington frost dates
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Climate data from the nearest NOAA station, Seattle Tacoma Intl Ap, Wa (3.7 mi from Des Moines). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.