Heppner, OR Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Heppner, a city in Morrow County, Oregon.
This Afternoon
74°F
Sunny
Sunny. High near 74, with temperatures falling to around 72 in the afternoon. West wind 6 to 10 mph, with gusts as high as 18 mph.
7-day forecast for Heppner
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 74°F | Sunny | 6 to 10 mph W | 1% |
| Tonight | 53°F | Clear | 2 to 6 mph SW | 1% |
| Saturday | 76°F | Sunny | 3 to 7 mph NW | 0% |
| Saturday Night | 54°F | Partly Cloudy | 6 mph SE | 0% |
| Sunday | 79°F | Sunny | 3 to 7 mph NE | 0% |
| Sunday Night | 55°F | Mostly Clear | 3 to 7 mph SE | 0% |
| Monday | 79°F | Sunny | 6 mph W | 0% |
| Monday Night | 56°F | Mostly Clear | 5 mph SW | 0% |
| Tuesday | 76°F | Sunny | 5 to 8 mph SW | 0% |
| Tuesday Night | 52°F | Partly Cloudy | 5 to 8 mph SW | 0% |
| Wednesday | 73°F | Sunny | 6 mph W | 0% |
| Wednesday Night | 52°F | Partly Cloudy | 5 mph SE | 0% |
| Thursday | 75°F | Mostly Sunny | 2 to 7 mph N | 1% |
| Thursday Night | 53°F | Partly Cloudy | 7 mph W | 5% |
Forecast source: National Weather Service (api.weather.gov) for Heppner (45.353, -119.561). Updated through the day.
Growing snapshot for Heppner
Last spring frost
Apr 26
First fall frost
Oct 19
Growing season
174 days
Hardiness zone
7a
More local growing data for Heppner: nearby ZIP 97836 weather · frost dates · planting calendar · Oregon frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Heppner, Or (5.3 mi from Heppner). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 18, 2026.