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Millersburg, OR Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Millersburg, a city in Linn County, Oregon.

Overnight
50°F
Areas Of Fog
Areas of fog. Partly cloudy, with a low around 50. Wind around 0 mph.

7-day forecast for Millersburg

WhenTempForecastWindPrecip
Overnight 50°F Areas Of Fog 0 mph 0%
Saturday 77°F Areas Of Fog then Mostly Sunny 0 to 5 mph N 0%
Saturday Night 51°F Mostly Clear then Patchy Fog 0 to 3 mph NNW 0%
Sunday 80°F Areas Of Fog then Mostly Sunny 0 to 6 mph N 0%
Sunday Night 52°F Mostly Clear then Patchy Fog 1 to 5 mph NW 0%
Monday 76°F Patchy Fog then Mostly Sunny 1 to 6 mph NNW 0%
Monday Night 50°F Partly Cloudy 2 to 6 mph N 0%
Tuesday 73°F Mostly Sunny 5 mph N 0%
Tuesday Night 49°F Partly Cloudy 1 to 5 mph NNW 0%
Wednesday 72°F Patchy Fog then Mostly Sunny 3 mph N 0%
Wednesday Night 50°F Partly Cloudy 3 mph NNW 1%
Thursday 70°F Mostly Sunny 3 to 7 mph N 11%
Thursday Night 50°F Mostly Cloudy 6 mph N 11%
Friday 68°F Mostly Sunny 3 to 7 mph N 9%

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 Sep 19, 2026.