Columbus, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Columbus, a town in Stillwater County, Montana.
Today
78°F
Sunny
Sunny. High near 78, with temperatures falling to around 76 in the afternoon. North wind 0 to 7 mph.
7-day forecast for Columbus
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 78°F | Sunny | 0 to 7 mph N | 0% |
| Tonight | 47°F | Mostly Clear | 1 to 7 mph ENE | 1% |
| Wednesday | 90°F | Sunny | 1 to 6 mph W | 0% |
| Wednesday Night | 51°F | Mostly Clear | 1 to 7 mph NW | 0% |
| Thursday | 98°F | Sunny | 5 mph W | 0% |
| Thursday Night | 56°F | Mostly Clear | 2 to 14 mph NNW | 0% |
| Friday | 103°F | Sunny | 3 mph WSW | 0% |
| Friday Night | 59°F | Mostly Clear | 6 to 12 mph NW | 0% |
| Saturday | 100°F | Sunny | 5 to 12 mph WNW | 0% |
| Saturday Night | 59°F | Partly Cloudy | 3 to 13 mph NNW | 1% |
| Sunday | 97°F | Sunny | 3 to 7 mph N | 2% |
| Sunday Night | 59°F | Partly Cloudy | 6 to 9 mph NNE | 7% |
| Monday | 94°F | Sunny | 3 to 8 mph N | 3% |
| Monday Night | 58°F | Partly Cloudy | 5 to 12 mph NNE | 9% |
Forecast source: National Weather Service (api.weather.gov) for Columbus (45.636, -109.249). Updated through the day.
Growing snapshot for Columbus
Last spring frost
May 27
First fall frost
Sep 14
Growing season
108 days
Hardiness zone
5a
More local growing data for Columbus: nearby ZIP 59019 weather · frost dates · planting calendar · Montana frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Columbus, Mt (1.7 mi from Columbus). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.