Columbus, MT Weather & Growing Conditions
Tonight
51°F
Chance Showers And Thunderstorms then Patchy Fog
A chance of showers and thunderstorms before 7pm, then showers and thunderstorms between 7pm and 9pm, then patchy fog and showers and thunderstorms between 9pm and midnight, then patchy fog and showers and thunderstorms. Cloudy. Low around 51, with temperatures rising to around 55 overnight. North northwest wind 3 to 9 mph. Chance of precipitation is 100%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 51°F | Chance Showers And Thunderstorms then Patchy Fog | 3 to 9 mph NNW | 95% |
| Saturday | 61°F | Showers And Thunderstorms | 6 to 13 mph NNW | 98% |
| Saturday Night | 48°F | Showers And Thunderstorms | 8 to 13 mph NW | 91% |
| Sunday | 66°F | Rain Showers Likely | 7 mph NW | 62% |
| Sunday Night | 45°F | Mostly Cloudy | 0 to 5 mph NE | 11% |
| Monday | 75°F | Mostly Sunny | 0 to 6 mph SSE | 1% |
| Monday Night | 45°F | Mostly Clear | 2 to 7 mph S | 0% |
| Tuesday | 79°F | Sunny | 3 mph S | 2% |
| Tuesday Night | 48°F | Partly Cloudy | 3 mph S | 4% |
| Wednesday | 80°F | Sunny | 1 to 5 mph WSW | 4% |
| Wednesday Night | 47°F | Mostly Clear | 5 mph SSW | 2% |
| Thursday | 81°F | Sunny | 2 to 7 mph SSW | 1% |
| Thursday Night | 47°F | Mostly Clear | 3 to 7 mph S | 2% |
| Friday | 82°F | Mostly Sunny | 6 mph SSW | 2% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Columbus, MT
Last spring frost
May 27
First fall frost
Sep 14
Growing season
108 days
Hardiness zone
5a
Explore more for Columbus, MT: full frost dates · planting calendar · Montana frost dates
Climate data from the nearest NOAA station, Columbus, Mt (1.7 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.