Toston, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Toston, a community in Broadwater County, Montana.
Tonight
52°F
Showers And Thunderstorms
Showers and thunderstorms. Cloudy, with a low around 52. North wind around 8 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.
7-day forecast for Toston
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 52°F | Showers And Thunderstorms | 8 mph N | 98% |
| Saturday | 60°F | Showers And Thunderstorms | 8 mph N | 94% |
| Saturday Night | 48°F | Chance Light Rain | 1 to 5 mph ESE | 54% |
| Sunday | 69°F | Patchy Fog then Partly Sunny | 3 mph SSW | 8% |
| Sunday Night | 44°F | Mostly Clear | 3 mph SSE | 0% |
| Monday | 76°F | Sunny | 5 mph S | 0% |
| Monday Night | 47°F | Mostly Clear | 3 mph SE | 0% |
| Tuesday | 76°F | Sunny | 3 mph S | 1% |
| Tuesday Night | 47°F | Partly Cloudy | 3 mph E | 2% |
| Wednesday | 76°F | Sunny | 3 mph S | 2% |
| Wednesday Night | 47°F | Mostly Clear | 3 mph ESE | 3% |
| Thursday | 78°F | Sunny | 5 mph S | 1% |
| Thursday Night | 47°F | Mostly Clear | 1 to 5 mph SSE | 2% |
| Friday | 78°F | Mostly Sunny | 5 mph SSW | 0% |
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 Sep 19, 2026.