Oroville, WA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Oroville, a city in Okanogan County, Washington.
Today
53°F
Partly Sunny
Partly sunny. High near 53, with temperatures falling to around 49 in the afternoon. South wind around 1 mph.
7-day forecast for Oroville
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 53°F | Partly Sunny | 1 mph S | 1% |
| Tonight | 38°F | Partly Cloudy | 0 mph | 1% |
| Wednesday | 54°F | Sunny | 0 to 5 mph S | 1% |
| Wednesday Night | 40°F | Chance Rain Showers | 0 to 3 mph SE | 29% |
| Thursday | 53°F | Slight Chance Rain Showers then Partly Sunny | 2 mph S | 18% |
| Thursday Night | 39°F | Mostly Cloudy | 2 to 6 mph SE | 14% |
| Friday | 53°F | Mostly Cloudy | 6 to 13 mph S | 14% |
| Friday Night | 40°F | Mostly Cloudy | 1 to 7 mph SE | 11% |
| Saturday | 54°F | Mostly Cloudy | 1 to 5 mph SE | 9% |
| Saturday Night | 42°F | Slight Chance Rain Showers | 6 mph SE | 23% |
| Sunday | 56°F | Slight Chance Rain Showers then Mostly Cloudy | 3 to 9 mph S | 23% |
| Sunday Night | 39°F | Mostly Cloudy | 0 to 3 mph NE | 7% |
| Monday | 52°F | Partly Sunny then Chance Rain Showers | 0 to 3 mph SE | 27% |
| Monday Night | 40°F | Chance Rain Showers | 2 mph SE | 40% |
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 Nov 3, 2026.