Lostine, OR Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Lostine, a city in Wallowa County, Oregon.
This Afternoon
72°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Mostly sunny. High near 72, with temperatures falling to around 70 in the afternoon. Northwest wind around 5 mph. Chance of precipitation is 30%.
7-day forecast for Lostine
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 72°F | Chance Showers And Thunderstorms | 5 mph NW | 31% |
| Tonight | 43°F | Slight Chance Rain Showers then Partly Cloudy | 2 mph SW | 19% |
| Saturday | 76°F | Sunny | 0 to 3 mph N | 2% |
| Saturday Night | 43°F | Partly Cloudy | 2 mph E | 0% |
| Sunday | 81°F | Sunny | 3 mph E | 1% |
| Sunday Night | 45°F | Mostly Clear | 3 mph S | 0% |
| Monday | 82°F | Sunny | 1 to 5 mph SW | 1% |
| Monday Night | 46°F | Partly Cloudy | 2 mph SW | 1% |
| Tuesday | 81°F | Sunny | 5 mph SW | 2% |
| Tuesday Night | 44°F | Partly Cloudy | 3 mph W | 2% |
| Wednesday | 79°F | Sunny | 3 mph W | 2% |
| Wednesday Night | 44°F | Partly Cloudy | 1 to 6 mph S | 2% |
| Thursday | 84°F | Sunny | 2 to 6 mph W | 1% |
| Thursday Night | 46°F | Partly Cloudy | 5 to 14 mph SW | 3% |
Forecast source: National Weather Service (api.weather.gov) for Lostine (45.487, -117.429). Updated through the day.
Growing snapshot for Lostine
Last spring frost
May 24
First fall frost
Oct 1
Growing season
126 days
Hardiness zone
6a
More local growing data for Lostine: nearby ZIP 97857 weather · frost dates · planting calendar · Oregon frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Joseph, Or (14.5 mi from Lostine). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.