Lake Ketchum, WA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Lake Ketchum, a community in Skagit County, Washington.
Overnight
53°F
Mostly Clear
Mostly clear, with a low around 53. North northwest wind around 1 mph.
7-day forecast for Lake Ketchum
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 53°F | Mostly Clear | 1 mph NNW | 0% |
| Tuesday | 81°F | Sunny | 1 to 9 mph NW | 0% |
| Tuesday Night | 57°F | Patchy Smoke then Mostly Clear | 1 to 8 mph NNW | 0% |
| Wednesday | 84°F | Sunny then Patchy Smoke | 1 to 8 mph NW | 0% |
| Wednesday Night | 59°F | Mostly Clear | 1 to 7 mph N | 0% |
| Thursday | 84°F | Sunny | 1 to 7 mph WNW | 0% |
| Thursday Night | 60°F | Mostly Clear | 1 to 7 mph W | 0% |
| Friday | 80°F | Sunny | 1 to 8 mph SW | 0% |
| Friday Night | 58°F | Mostly Clear | 2 to 8 mph W | 0% |
| Saturday | 73°F | Sunny | 2 to 12 mph WSW | 0% |
| Saturday Night | 56°F | Partly Cloudy | 2 to 12 mph W | 0% |
| Sunday | 72°F | Mostly Sunny | 2 to 8 mph WSW | 0% |
| Sunday Night | 56°F | Partly Cloudy | 2 to 8 mph W | 1% |
| Monday | 72°F | Mostly Sunny | 2 to 8 mph WSW | 1% |
Forecast source: National Weather Service (api.weather.gov) for Lake Ketchum (48.286, -122.346). Updated through the day.
Growing snapshot for Lake Ketchum
Last spring frost
Mar 24
First fall frost
Nov 3
Growing season
224 days
Hardiness zone
8b
More local growing data for Lake Ketchum: nearby ZIP 98238 weather · frost dates · planting calendar · Washington frost dates
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Bay View
Big Lake
Bow
Bryant
Burlington
Clear Lake
Concrete
Conway
Edison
Hamilton
La Conner
Lake McMurray
Lyman
Marblemount
Mount Vernon
Rockport
Sedro-Woolley
Climate data from the nearest NOAA station, Mt Vernon 3 Wnw, Wa (7.5 mi from Lake Ketchum). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.