Culbertson, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Culbertson, a town in Roosevelt County, Montana.
This Afternoon
50°F
Sunny
Sunny. High near 50, with temperatures falling to around 43 in the afternoon. West wind 1 to 5 mph.
7-day forecast for Culbertson
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 50°F | Sunny | 1 to 5 mph W | 0% |
| Tonight | 25°F | Patchy Fog | 1 mph WSW | 0% |
| Wednesday | 52°F | Patchy Fog then Mostly Sunny | 0 to 5 mph WNW | 0% |
| Wednesday Night | 25°F | Partly Cloudy | 3 mph NNW | 0% |
| Thursday | 49°F | Mostly Sunny | 1 to 5 mph SE | 0% |
| Thursday Night | 27°F | Partly Cloudy | 5 mph SSW | 1% |
| Friday | 54°F | Mostly Sunny | 2 to 10 mph WSW | 1% |
| Friday Night | 32°F | Partly Cloudy | 6 to 10 mph WSW | 9% |
| Saturday | 54°F | Mostly Sunny | 9 to 22 mph W | 9% |
| Saturday Night | 26°F | Mostly Clear | 2 to 9 mph WSW | 0% |
| Sunday | 57°F | Mostly Sunny | 2 to 8 mph SSW | 1% |
| Sunday Night | 34°F | Partly Cloudy | 7 mph WSW | 1% |
| Monday | 56°F | Mostly Sunny | 3 to 8 mph W | 1% |
| Monday Night | 30°F | Partly Cloudy | 3 mph WSW | 2% |
Forecast source: National Weather Service (api.weather.gov) for Culbertson (48.145, -104.518). Updated through the day.
Growing snapshot for Culbertson
Last spring frost
May 21
First fall frost
Sep 20
Growing season
120 days
Hardiness zone
4a
More local growing data for Culbertson: nearby ZIP 59218 weather · frost dates · planting calendar · Montana frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Culbertson, Mt (5.2 mi from Culbertson). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.