Mill City, OR Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Mill City, a city in Linn County, Oregon.
This Afternoon
60°F
Light Rain Likely
Rain likely after 4pm. Cloudy. High near 60, with temperatures falling to around 54 in the afternoon. West southwest wind around 5 mph. Chance of precipitation is 60%.
7-day forecast for Mill City
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 60°F | Light Rain Likely | 5 mph WSW | 61% |
| Tonight | 44°F | Light Rain | 1 to 5 mph SSW | 79% |
| Thursday | 57°F | Patchy Fog then Mostly Sunny | 2 mph SE | 11% |
| Thursday Night | 40°F | Patchy Fog then Mostly Cloudy | 0 to 5 mph ESE | 1% |
| Friday | 60°F | Chance Light Rain | 3 mph SSE | 29% |
| Friday Night | 42°F | Chance Light Rain then Mostly Cloudy | 2 to 6 mph SE | 29% |
| Saturday | 68°F | Mostly Sunny | 0 to 5 mph SSE | 8% |
| Saturday Night | 46°F | Light Rain | 0 to 7 mph S | 84% |
| Sunday | 55°F | Light Rain | 0 to 3 mph WSW | 84% |
| Sunday Night | 42°F | Slight Chance Light Rain then Mostly Cloudy | 0 to 5 mph ENE | 15% |
| Monday | 58°F | Partly Sunny then Slight Chance Light Rain | 3 mph SSW | 15% |
| Monday Night | 43°F | Chance Light Rain | 1 to 6 mph SSE | 30% |
| Tuesday | 60°F | Chance Light Rain | 7 mph SSE | 38% |
| Tuesday Night | 45°F | Chance Light Rain | 5 to 8 mph SSE | 38% |
Forecast source: National Weather Service (api.weather.gov) for Mill City (44.752, -122.477). Updated through the day.
Growing snapshot for Mill City
Last spring frost
Mar 9
First fall frost
Dec 3
Growing season
270 days
Hardiness zone
8b
More local growing data for Mill City: nearby ZIP 97360 weather · frost dates · planting calendar · Oregon frost dates
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Climate data from the nearest NOAA station, Detroit Dam, Or (11.3 mi from Mill City). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 5, 2026.