Harrisburg, OR Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Harrisburg, a city in Linn County, Oregon.
This Afternoon
60°F
Light Rain Likely
Rain likely after 3pm. Cloudy. High near 60, with temperatures falling to around 55 in the afternoon. South southwest wind around 6 mph. Chance of precipitation is 60%.
7-day forecast for Harrisburg
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 60°F | Light Rain Likely | 6 mph SSW | 64% |
| Tonight | 44°F | Chance Light Rain then Mostly Cloudy | 3 to 9 mph S | 47% |
| Thursday | 59°F | Partly Sunny | 0 to 3 mph SSE | 2% |
| Thursday Night | 38°F | Patchy Fog | 0 to 6 mph E | 1% |
| Friday | 60°F | Slight Chance Light Rain | 2 to 7 mph S | 20% |
| Friday Night | 41°F | Slight Chance Light Rain then Mostly Cloudy | 3 mph SSE | 20% |
| Saturday | 65°F | Mostly Sunny | 3 mph S | 10% |
| Saturday Night | 46°F | Light Rain Likely | 2 to 14 mph S | 71% |
| Sunday | 57°F | Light Rain Likely | 1 to 10 mph SSW | 71% |
| Sunday Night | 40°F | Mostly Cloudy | 2 mph NNE | 4% |
| Monday | 58°F | Mostly Cloudy then Slight Chance Light Rain | 3 mph SSE | 15% |
| Monday Night | 42°F | Slight Chance Light Rain | 1 to 8 mph S | 24% |
| Tuesday | 61°F | Chance Light Rain | 3 to 8 mph S | 28% |
| Tuesday Night | 44°F | Chance Light Rain | 3 to 10 mph S | 31% |
Forecast source: National Weather Service (api.weather.gov) for Harrisburg (44.270, -123.163). Updated through the day.
Growing snapshot for Harrisburg
Last spring frost
Apr 11
First fall frost
Oct 23
Growing season
196 days
Hardiness zone
8b
More local growing data for Harrisburg: nearby ZIP 97446 weather · frost dates · planting calendar · Oregon frost dates
Nearby towns & communities
Albany
Black Butte Ranch
Brownsville
Cascadia
Crabtree
Crawfordsville
Detroit
Halsey
Holley
Idanha
Lacomb
Lebanon
Mill City
Millersburg
Scio
Shedd
Sodaville
South Lebanon
Sweet Home
Tangent
Waterloo
West Scio
Climate data from the nearest NOAA station, Eugene Mahlon Sweet Ap, Or (12.3 mi from Harrisburg). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 5, 2026.