Millersburg, OR Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Millersburg, a city in Linn County, Oregon.
Overnight
37°F
Patchy Fog
Patchy fog before 5am, then patchy frost and patchy fog. Partly cloudy, with a low around 37. East southeast wind around 1 mph.
7-day forecast for Millersburg
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 37°F | Patchy Fog | 1 mph ESE | 1% |
| Wednesday | 57°F | Patchy Frost then Light Rain | 1 to 5 mph S | 86% |
| Wednesday Night | 44°F | Light Rain | 3 to 8 mph S | 78% |
| Thursday | 58°F | Mostly Sunny | 0 to 3 mph S | 8% |
| Thursday Night | 40°F | Areas Of Fog | 2 mph SSE | 6% |
| Friday | 59°F | Slight Chance Light Rain | 1 to 5 mph S | 15% |
| Friday Night | 42°F | Mostly Cloudy | 2 mph SSE | 11% |
| Saturday | 62°F | Partly Sunny then Slight Chance Light Rain | 2 mph S | 18% |
| Saturday Night | 47°F | Light Rain Likely | 2 to 14 mph S | 72% |
| Sunday | 56°F | Chance Light Rain | 0 to 8 mph SSW | 45% |
| Sunday Night | 41°F | Slight Chance Light Rain then Mostly Cloudy | 1 mph N | 15% |
| Monday | 56°F | Chance Light Rain | 3 mph SSE | 27% |
| Monday Night | 43°F | Chance Light Rain | 1 to 7 mph S | 32% |
| Tuesday | 58°F | Chance Light Rain | 1 to 6 mph S | 36% |
Forecast source: National Weather Service (api.weather.gov) for Millersburg (44.679, -123.072). Updated through the day.
Growing snapshot for Millersburg
Last spring frost
Apr 17
First fall frost
Oct 28
Growing season
194 days
Hardiness zone
8b
More local growing data for Millersburg: nearby ZIP 97321 weather · frost dates · planting calendar · Oregon frost dates
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Climate data from the nearest NOAA station, Corvallis State Univ, Or (2.8 mi from Millersburg). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.