Lake Ketchum, WA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Lake Ketchum, a community in Skagit County, Washington.
Today
58°F
Partly Sunny then Chance Light Rain
A chance of rain after 4pm. Partly sunny. High near 58, with temperatures falling to around 55 in the afternoon. Southeast wind 3 to 16 mph, with gusts as high as 21 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Lake Ketchum
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 58°F | Partly Sunny then Chance Light Rain | 3 to 16 mph SE | 34% |
| Tonight | 47°F | Light Rain | 7 to 18 mph SSE | 91% |
| Thursday | 56°F | Partly Sunny | 7 to 13 mph SSE | 9% |
| Thursday Night | 47°F | Light Rain | 12 to 17 mph SE | 88% |
| Friday | 55°F | Light Rain | 12 to 22 mph SE | 88% |
| Friday Night | 48°F | Light Rain Likely | 6 to 12 mph SE | 68% |
| Saturday | 61°F | Chance Light Rain | 6 to 12 mph SE | 29% |
| Saturday Night | 50°F | Light Rain | 12 to 22 mph SSE | 83% |
| Sunday | 55°F | Light Rain Likely | 3 to 16 mph SSE | 62% |
| Sunday Night | 44°F | Slight Chance Light Rain | 3 to 7 mph ESE | 22% |
| Monday | 54°F | Chance Light Rain | 3 to 9 mph ESE | 45% |
| Monday Night | 48°F | Light Rain Likely | 9 to 18 mph SE | 60% |
| Tuesday | 57°F | Light Rain Likely | 15 to 18 mph SE | 60% |
| Tuesday Night | 50°F | Light Rain Likely | 13 to 20 mph SE | 55% |
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
Nearby towns & communities
Alger
Anacortes
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 Nov 4, 2026.