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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.

This Afternoon
77°F
Mostly Sunny
Mostly sunny, with a high near 77. North wind around 5 mph.

7-day forecast for Millersburg

WhenTempForecastWindPrecip
This Afternoon 77°F Mostly Sunny 5 mph N 0%
Tonight 50°F Mostly Clear then Patchy Fog 2 mph NNW 0%
Sunday 80°F Patchy Fog then Sunny 1 to 6 mph NNW 0%
Sunday Night 52°F Mostly Clear then Patchy Fog 3 mph NW 0%
Monday 77°F Patchy Fog then Mostly Sunny 1 to 6 mph NNW 0%
Monday Night 50°F Partly Cloudy 2 to 6 mph NNW 0%
Tuesday 73°F Mostly Sunny 5 mph NNW 0%
Tuesday Night 49°F Partly Cloudy 1 to 5 mph NNW 0%
Wednesday 71°F Patchy Fog then Mostly Sunny 3 mph NNW 0%
Wednesday Night 50°F Mostly Cloudy 5 mph NNW 3%
Thursday 69°F Mostly Sunny 5 to 8 mph N 7%
Thursday Night 49°F Mostly Cloudy then Slight Chance Light Rain 3 to 7 mph N 20%
Friday 66°F Slight Chance Light Rain 3 to 8 mph N 20%
Friday Night 47°F Partly Cloudy 5 to 8 mph NNW 7%

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.