Culbertson, MT Weather & Growing Conditions
This Afternoon
49°F
Sunny
Sunny. High near 49, with temperatures falling to around 43 in the afternoon. West wind 1 to 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 49°F | Sunny | 1 to 5 mph W | 0% |
| Tonight | 25°F | Patchy Fog | 2 mph SW | 0% |
| Wednesday | 52°F | Patchy Fog then Mostly Sunny | 1 to 6 mph W | 0% |
| Wednesday Night | 26°F | Partly Cloudy | 2 mph WSW | 0% |
| Thursday | 51°F | Mostly Sunny | 2 to 9 mph SSE | 0% |
| Thursday Night | 29°F | Partly Cloudy | 3 to 7 mph SW | 0% |
| Friday | 54°F | Sunny | 6 to 12 mph WSW | 2% |
| Friday Night | 34°F | Partly Cloudy | 6 to 12 mph WSW | 3% |
| Saturday | 56°F | Sunny | 7 to 18 mph W | 3% |
| Saturday Night | 30°F | Mostly Clear | 3 to 7 mph SSW | 0% |
| Sunday | 62°F | Mostly Sunny | 5 to 10 mph SSW | 0% |
| Sunday Night | 38°F | Partly Cloudy | 8 to 14 mph WSW | 1% |
| Monday | 55°F | Mostly Sunny | 5 to 13 mph W | 1% |
| Monday Night | 32°F | Partly Cloudy | 5 mph WSW | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Culbertson, MT
Last spring frost
May 21
First fall frost
Sep 20
Growing season
120 days
Hardiness zone
4a
Explore more for Culbertson, MT: full frost dates · planting calendar · Montana frost dates
Climate data from the nearest NOAA station, Culbertson, Mt (5.2 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.