Oroville, WA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Oroville, a city in Okanogan County, Washington.
Overnight
57°F
Patchy Smoke
Patchy smoke. Mostly clear, with a low around 57. North wind around 2 mph.
7-day forecast for Oroville
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 57°F | Patchy Smoke | 2 mph N | 0% |
| Tuesday | 91°F | Patchy Smoke | 3 mph N | 0% |
| Tuesday Night | 61°F | Smoke | 0 to 3 mph NE | 0% |
| Wednesday | 95°F | Smoke | 0 to 7 mph SW | 0% |
| Wednesday Night | 64°F | Smoke then Mostly Clear | 0 to 7 mph SW | 0% |
| Thursday | 99°F | Sunny | 0 to 6 mph SW | 0% |
| Thursday Night | 68°F | Mostly Clear | 0 to 6 mph NW | 0% |
| Friday | 98°F | Sunny | 1 to 7 mph NW | 0% |
| Friday Night | 66°F | Mostly Clear | 3 to 9 mph NW | 0% |
| Saturday | 94°F | Sunny | 6 mph NW | 0% |
| Saturday Night | 65°F | Partly Cloudy | 6 to 12 mph NW | 0% |
| Sunday | 92°F | Sunny | 6 to 9 mph NW | 1% |
| Sunday Night | 64°F | Partly Cloudy | 6 to 9 mph NW | 1% |
| Monday | 91°F | Sunny | 5 to 8 mph NW | 2% |
Forecast source: National Weather Service (api.weather.gov) for Oroville (48.947, -119.430). Updated through the day.
Growing snapshot for Oroville
Last spring frost
May 6
First fall frost
Oct 6
Growing season
151 days
Hardiness zone
6a
More local growing data for Oroville: nearby ZIP 98844 weather · frost dates · planting calendar · Washington frost dates
Nearby towns & communities
Brewster
Conconully
Coulee Dam
Disautel
Elmer City
Loomis
Malott
Methow
Nespelem
North Omak
Okanogan
Omak
Pateros
Riverside
Tonasket
Twisp
Winthrop
Climate data from the nearest NOAA station, Tonasket 11Ne, Wa (9.1 mi from Oroville). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.