Harrisburg, OR Weather & Growing Conditions
Today
77°F
Mostly Sunny
Mostly sunny, with a high near 77. North wind 0 to 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 77°F | Mostly Sunny | 0 to 5 mph N | 0% |
| Tonight | 49°F | Partly Cloudy then Patchy Fog | 0 to 3 mph NNE | 0% |
| Sunday | 79°F | Patchy Fog then Sunny | 0 to 6 mph N | 0% |
| Sunday Night | 50°F | Mostly Clear then Patchy Fog | 0 to 6 mph WNW | 0% |
| Monday | 76°F | Patchy Fog then Mostly Sunny | 0 to 8 mph NNW | 0% |
| Monday Night | 49°F | Mostly Clear then Patchy Fog | 1 to 8 mph N | 0% |
| Tuesday | 73°F | Patchy Fog then Mostly Sunny | 1 to 6 mph N | 0% |
| Tuesday Night | 46°F | Partly Cloudy then Patchy Fog | 1 to 6 mph N | 0% |
| Wednesday | 72°F | Patchy Fog then Mostly Sunny | 1 to 6 mph N | 0% |
| Wednesday Night | 47°F | Partly Cloudy | 5 mph N | 1% |
| Thursday | 71°F | Mostly Sunny | 3 to 7 mph N | 7% |
| Thursday Night | 47°F | Mostly Cloudy | 7 mph N | 9% |
| Friday | 68°F | Mostly Sunny | 5 to 9 mph N | 8% |
| Friday Night | 45°F | Partly Cloudy | 3 to 9 mph N | 7% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Harrisburg, OR
Last spring frost
Apr 11
First fall frost
Oct 23
Growing season
196 days
Hardiness zone
8b
Explore more for Harrisburg, OR: full frost dates · planting calendar · Oregon frost dates
Climate data from the nearest NOAA station, Eugene Mahlon Sweet Ap, Or (12.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.