Grant, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Grant, a community in Beaverhead County, Montana.
Tonight
45°F
Showers And Thunderstorms
Showers and thunderstorms. Cloudy, with a low around 45. North northwest wind 3 to 7 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
7-day forecast for Grant
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 45°F | Showers And Thunderstorms | 3 to 7 mph NNW | 86% |
| Saturday | 57°F | Light Rain then Showers And Thunderstorms | 3 to 8 mph NNW | 79% |
| Saturday Night | 42°F | Showers And Thunderstorms Likely then Chance Light Rain | 1 to 7 mph SSW | 65% |
| Sunday | 67°F | Mostly Sunny | 3 mph WNW | 2% |
| Sunday Night | 41°F | Mostly Clear | 5 mph SSE | 0% |
| Monday | 75°F | Sunny | 3 mph SW | 0% |
| Monday Night | 43°F | Partly Cloudy | 3 mph SW | 1% |
| Tuesday | 74°F | Mostly Sunny | 1 to 5 mph SSW | 1% |
| Tuesday Night | 43°F | Partly Cloudy | 5 mph SSW | 3% |
| Wednesday | 75°F | Sunny | 2 to 7 mph SW | 3% |
| Wednesday Night | 43°F | Mostly Clear | 6 mph SSW | 1% |
| Thursday | 77°F | Sunny | 2 to 9 mph S | 1% |
| Thursday Night | 44°F | Partly Cloudy | 5 to 9 mph S | 0% |
| Friday | 78°F | Mostly Sunny | 3 to 12 mph S | 1% |
Forecast source: National Weather Service (api.weather.gov) for Grant (45.010, -113.067). Updated through the day.
Growing snapshot for Grant
Growing season
72 days
Hardiness zone
5a
More local growing data for Grant: nearby ZIP 59725 weather · frost dates · planting calendar · Montana frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Dillon 18 Wsw, Mt (10.2 mi from Grant). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.