Corvallis has milder winters than most of Montana
Corvallis has chilly winters and warm summers, with very little rain. A typical July afternoon reaches 86°, a January night drops to 19°, and about 17 inches of snow falls in a normal winter. Normal November highs come to 43°, and lows to 24°.
Getting the latest forecast from the National Weather Service…
What stands out about Corvallis’s weather
Read from 30 years of NOAA records. Each one opens the full story on the Climate page.
Where today sits in Corvallis’s year
Typical highs and lows month by month, from 30 years of NOAA records.
Weather talk
Road reports, first frosts and storm memories from neighbors in Corvallis.
Your answer becomes a post in Town Square.
Forecast, conditions and alerts: National Weather Service. Climate: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000. Temperatures and rainfall come from NOAA’s gridded normals for Corvallis itself (about a 3-mile square). Snow, frost dates and day counts: the NOAA station at Stevensville, MT (14 mi, snow) and Western Ag Rsch Ctr, MT (2 mi, frost, heat and degree days). Sunrise and sunset are calculated from the town’s position. Normals are 30-year averages, not a forecast.