Helmville, MT Weather & Growing Conditions
Tonight
23°F
Mostly Cloudy
Mostly cloudy, with a low around 23. Wind around 0 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 23°F | Mostly Cloudy | 0 mph | 0% |
| Wednesday | 48°F | Mostly Sunny | 2 mph NNW | 0% |
| Wednesday Night | 23°F | Mostly Clear | 1 mph S | 0% |
| Thursday | 46°F | Mostly Sunny | 1 to 6 mph WSW | 1% |
| Thursday Night | 23°F | Partly Cloudy | 5 mph WSW | 1% |
| Friday | 48°F | Mostly Sunny | 2 to 6 mph WSW | 5% |
| Friday Night | 28°F | Partly Cloudy | 2 to 7 mph WSW | 5% |
| Saturday | 54°F | Mostly Sunny | 2 mph WSW | 1% |
| Saturday Night | 30°F | Partly Cloudy | 0 to 5 mph SSE | 4% |
| Sunday | 57°F | Mostly Sunny | 3 to 9 mph SSW | 6% |
| Sunday Night | 30°F | Partly Cloudy | 1 to 8 mph W | 6% |
| Monday | 53°F | Partly Sunny | 1 mph W | 7% |
| Monday Night | 30°F | Mostly Cloudy | 1 mph WSW | 7% |
| Tuesday | 54°F | Partly Sunny | 3 mph WSW | 7% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Helmville, MT
Growing season
67 days
Hardiness zone
5a
Explore more for Helmville, MT: full frost dates · planting calendar · Montana frost dates
Climate data from the nearest NOAA station, Ovando 9 Sse, Mt (2.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.