Toston, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Toston, a community in Broadwater County, Montana.
Tonight
28°F
Mostly Cloudy
Mostly cloudy, with a low around 28. Southeast wind 0 to 3 mph.
7-day forecast for Toston
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 28°F | Mostly Cloudy | 0 to 3 mph SE | 0% |
| Wednesday | 47°F | Mostly Sunny | 1 mph N | 0% |
| Wednesday Night | 28°F | Patchy Fog | 1 to 5 mph SE | 0% |
| Thursday | 50°F | Patchy Fog then Mostly Sunny | 5 mph S | 7% |
| Thursday Night | 29°F | Partly Cloudy | 5 mph SSW | 7% |
| Friday | 51°F | Mostly Sunny | 5 to 9 mph S | 4% |
| Friday Night | 32°F | Partly Cloudy | 6 to 10 mph SSW | 4% |
| Saturday | 52°F | Mostly Sunny | 6 mph S | 0% |
| Saturday Night | 31°F | Partly Cloudy | 5 to 9 mph SSE | 0% |
| Sunday | 58°F | Mostly Sunny | 5 to 9 mph S | 1% |
| Sunday Night | 34°F | Mostly Cloudy | 7 mph S | 1% |
| Monday | 54°F | Partly Sunny | 5 mph S | 1% |
| Monday Night | 34°F | Mostly Cloudy | 2 to 6 mph S | 1% |
| Tuesday | 58°F | Mostly Sunny | 6 mph SSW | 2% |
Forecast source: National Weather Service (api.weather.gov) for Toston (46.161, -111.448). Updated through the day.
Growing snapshot for Toston
Last spring frost
May 19
First fall frost
Sep 19
Growing season
122 days
Hardiness zone
5a
More local growing data for Toston: nearby ZIP 59643 weather · frost dates · planting calendar · Montana frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Townsend 3Se, Mt (12.9 mi from Toston). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.