Corvallis, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Corvallis, a community in Ravalli County, Montana.
Overnight
42°F
Patchy Smoke
Patchy smoke. Mostly clear, with a low around 42. South southeast wind around 1 mph.
7-day forecast for Corvallis
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 42°F | Patchy Smoke | 1 mph SSE | 0% |
| Tuesday | 80°F | Areas Of Smoke | 1 to 8 mph N | 0% |
| Tuesday Night | 48°F | Patchy Smoke | 2 to 8 mph SE | 0% |
| Wednesday | 86°F | Patchy Smoke | 5 mph SW | 0% |
| Wednesday Night | 50°F | Patchy Smoke then Mostly Clear | 6 mph SW | 0% |
| Thursday | 93°F | Sunny | 5 mph SW | 0% |
| Thursday Night | 54°F | Mostly Clear | 6 mph SW | 0% |
| Friday | 95°F | Sunny | 2 to 8 mph SW | 0% |
| Friday Night | 54°F | Mostly Clear | 6 to 13 mph WSW | 0% |
| Saturday | 92°F | Sunny | 3 to 9 mph SW | 0% |
| Saturday Night | 54°F | Mostly Clear | 3 to 10 mph W | 0% |
| Sunday | 90°F | Sunny | 2 to 6 mph SW | 0% |
| Sunday Night | 53°F | Mostly Clear | 2 to 9 mph WNW | 0% |
| Monday | 89°F | Sunny | 2 to 6 mph W | 0% |
Forecast source: National Weather Service (api.weather.gov) for Corvallis (46.314, -114.112). Updated through the day.
Growing snapshot for Corvallis
Last spring frost
May 23
First fall frost
Sep 21
Growing season
118 days
Hardiness zone
5b
More local growing data for Corvallis: nearby ZIP 59841 weather · frost dates · planting calendar · Montana frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Western Ag Rsch Ctr, Mt (6.6 mi from Corvallis). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.