Oroville, WA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Oroville, a city in Okanogan County, Washington.
Tonight
56°F
Partly Cloudy
Partly cloudy, with a low around 56. Wind around 0 mph.
7-day forecast for Oroville
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 56°F | Partly Cloudy | 0 mph | 0% |
| Saturday | 80°F | Mostly Sunny | 0 to 3 mph SW | 0% |
| Saturday Night | 55°F | Partly Cloudy | 1 mph SE | 0% |
| Sunday | 80°F | Sunny | 0 to 5 mph S | 0% |
| Sunday Night | 56°F | Mostly Clear | 0 to 5 mph S | 0% |
| Monday | 80°F | Sunny | 0 to 3 mph S | 0% |
| Monday Night | 56°F | Partly Cloudy | 2 mph N | 0% |
| Tuesday | 76°F | Mostly Sunny | 2 mph W | 1% |
| Tuesday Night | 54°F | Partly Cloudy | 2 mph NW | 1% |
| Wednesday | 72°F | Mostly Sunny | 3 mph W | 3% |
| Wednesday Night | 53°F | Mostly Cloudy | 0 to 3 mph E | 4% |
| Thursday | 73°F | Partly Sunny | 2 mph E | 10% |
| Thursday Night | 54°F | Mostly Cloudy | 2 mph NE | 13% |
| Friday | 71°F | Partly Sunny then Slight Chance Rain Showers | 1 to 6 mph N | 15% |
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 Sep 19, 2026.