Heppner, OR Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Heppner, a city in Morrow County, Oregon.
This Afternoon
52°F
Mostly Sunny
Mostly sunny. High near 52, with temperatures falling to around 45 in the afternoon. Northwest wind around 3 mph.
7-day forecast for Heppner
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 52°F | Mostly Sunny | 3 mph NW | 0% |
| Tonight | 41°F | Chance Rain Showers | 2 to 9 mph S | 53% |
| Thursday | 54°F | Mostly Sunny | 2 to 12 mph SW | 7% |
| Thursday Night | 39°F | Partly Cloudy | 2 to 12 mph S | 0% |
| Friday | 58°F | Mostly Cloudy | 3 to 12 mph S | 6% |
| Friday Night | 43°F | Mostly Cloudy | 3 to 8 mph S | 6% |
| Saturday | 62°F | Mostly Sunny | 3 to 8 mph SE | 0% |
| Saturday Night | 46°F | Mostly Cloudy | 3 to 13 mph S | 9% |
| Sunday | 57°F | Mostly Cloudy | 2 to 13 mph SW | 9% |
| Sunday Night | 41°F | Mostly Cloudy | 2 mph S | 5% |
| Monday | 55°F | Mostly Cloudy | 0 to 3 mph N | 7% |
| Monday Night | 42°F | Mostly Cloudy | 0 to 7 mph SE | 14% |
| Tuesday | 61°F | Slight Chance Rain Showers | 3 to 9 mph S | 15% |
| Tuesday Night | 45°F | Slight Chance Rain Showers | 3 to 13 mph S | 19% |
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 Nov 4, 2026.