Irrigon, OR Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Irrigon, a city in Morrow County, Oregon.
Tonight
33°F
Patchy Fog
Patchy fog. Mostly clear. Low around 33, with temperatures rising to around 35 overnight. South wind around 2 mph.
7-day forecast for Irrigon
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 33°F | Patchy Fog | 2 mph S | 0% |
| Wednesday | 54°F | Patchy Fog then Sunny | 1 mph SE | 1% |
| Wednesday Night | 38°F | Chance Rain Showers | 1 to 5 mph S | 46% |
| Thursday | 59°F | Mostly Sunny | 2 to 9 mph SW | 9% |
| Thursday Night | 36°F | Patchy Fog | 3 mph S | 3% |
| Friday | 55°F | Mostly Cloudy | 2 mph S | 3% |
| Friday Night | 38°F | Mostly Cloudy | 2 mph E | 2% |
| Saturday | 59°F | Mostly Sunny | 2 mph NE | 1% |
| Saturday Night | 39°F | Mostly Cloudy | 2 mph W | 3% |
| Sunday | 60°F | Partly Sunny | 2 to 7 mph SW | 3% |
| Sunday Night | 38°F | Mostly Cloudy | 3 mph SW | 1% |
| Monday | 55°F | Partly Sunny | 2 mph N | 6% |
| Monday Night | 37°F | Mostly Cloudy then Slight Chance Rain Showers | 1 mph N | 15% |
| Tuesday | 59°F | Slight Chance Rain Showers then Partly Sunny | 2 mph SE | 15% |
Forecast source: National Weather Service (api.weather.gov) for Irrigon (45.895, -119.489). Updated through the day.
Growing snapshot for Irrigon
Last spring frost
Apr 14
First fall frost
Oct 21
Growing season
188 days
Hardiness zone
7b
More local growing data for Irrigon: nearby ZIP 97844 weather · frost dates · planting calendar · Oregon frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Boardman, Or (7.4 mi from Irrigon). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.