Columbus, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Columbus, a town in Stillwater County, Montana.
This Afternoon
53°F
Sunny
Sunny. High near 53, with temperatures falling to around 48 in the afternoon. South southeast wind around 7 mph.
7-day forecast for Columbus
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 53°F | Sunny | 7 mph SSE | 0% |
| Tonight | 25°F | Patchy Fog | 5 mph SSW | 0% |
| Wednesday | 56°F | Patchy Fog then Mostly Sunny | 5 mph N | 0% |
| Wednesday Night | 25°F | Patchy Fog | 2 mph S | 0% |
| Thursday | 58°F | Patchy Fog then Sunny | 3 mph SW | 2% |
| Thursday Night | 29°F | Partly Cloudy then Patchy Fog | 1 to 6 mph WSW | 2% |
| Friday | 59°F | Patchy Fog then Sunny | 5 mph SW | 1% |
| Friday Night | 31°F | Partly Cloudy | 7 mph SW | 1% |
| Saturday | 62°F | Mostly Sunny | 7 mph SW | 0% |
| Saturday Night | 32°F | Partly Cloudy | 3 to 7 mph SSW | 0% |
| Sunday | 67°F | Mostly Sunny | 3 to 8 mph SSW | 0% |
| Sunday Night | 33°F | Partly Cloudy | 2 to 6 mph WSW | 0% |
| Monday | 60°F | Mostly Sunny | 3 mph SSE | 1% |
| Monday Night | 31°F | Partly Cloudy | 3 mph SW | 1% |
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 Nov 4, 2026.