Okanogan, WA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Okanogan, a city in Okanogan County, Washington.
Tonight
34°F
Mostly Clear
Mostly clear, with a low around 34. North wind around 3 mph.
7-day forecast for Okanogan
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 34°F | Mostly Clear | 3 mph N | 1% |
| Wednesday | 53°F | Sunny | 1 to 7 mph S | 4% |
| Wednesday Night | 38°F | Chance Rain Showers | 3 mph SW | 33% |
| Thursday | 55°F | Patchy Fog then Mostly Sunny | 1 to 6 mph S | 2% |
| Thursday Night | 38°F | Partly Cloudy then Slight Chance Rain Showers | 1 to 5 mph S | 20% |
| Friday | 52°F | Slight Chance Rain Showers then Mostly Cloudy | 2 to 10 mph S | 20% |
| Friday Night | 35°F | Mostly Cloudy | 1 to 6 mph W | 9% |
| Saturday | 55°F | Mostly Cloudy | 3 mph W | 9% |
| Saturday Night | 37°F | Mostly Cloudy | 2 to 9 mph SW | 11% |
| Sunday | 57°F | Partly Sunny | 5 to 10 mph S | 8% |
| Sunday Night | 34°F | Mostly Cloudy | 5 mph W | 1% |
| Monday | 52°F | Partly Sunny then Slight Chance Rain Showers | 3 mph N | 15% |
| Monday Night | 35°F | Chance Rain Showers | 3 mph SW | 32% |
| Tuesday | 54°F | Chance Rain Showers | 2 to 6 mph S | 32% |
Forecast source: National Weather Service (api.weather.gov) for Okanogan (48.367, -119.579). Updated through the day.
Growing snapshot for Okanogan
Last spring frost
Apr 30
First fall frost
Oct 7
Growing season
160 days
Hardiness zone
7a
More local growing data for Okanogan: nearby ZIP 98840 weather · frost dates · planting calendar · Washington frost dates
Nearby towns & communities
Brewster
Conconully
Coulee Dam
Disautel
Elmer City
Loomis
Malott
Methow
Nespelem
North Omak
Omak
Oroville
Pateros
Riverside
Tonasket
Twisp
Winthrop
Climate data from the nearest NOAA station, Omak Ap, Wa (11.7 mi from Okanogan). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.