Dillon, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Dillon, a city in Beaverhead County, Montana.
Tonight
47°F
Showers And Thunderstorms
Showers and thunderstorms. Cloudy, with a low around 47. North northeast wind around 7 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
7-day forecast for Dillon
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 47°F | Showers And Thunderstorms | 7 mph NNE | 95% |
| Saturday | 59°F | Showers And Thunderstorms | 5 to 9 mph NNW | 82% |
| Saturday Night | 44°F | Chance Showers And Thunderstorms then Chance Light Rain | 2 to 9 mph SE | 42% |
| Sunday | 68°F | Mostly Sunny | 3 mph WSW | 2% |
| Sunday Night | 42°F | Mostly Clear | 5 mph SE | 0% |
| Monday | 74°F | Sunny | 5 mph SSW | 0% |
| Monday Night | 44°F | Mostly Clear | 5 mph SW | 1% |
| Tuesday | 75°F | Mostly Sunny | 5 mph SW | 1% |
| Tuesday Night | 44°F | Partly Cloudy | 5 mph SW | 3% |
| Wednesday | 77°F | Sunny | 2 to 6 mph SSW | 2% |
| Wednesday Night | 44°F | Mostly Clear | 5 to 8 mph S | 2% |
| Thursday | 78°F | Sunny | 2 to 7 mph SSW | 1% |
| Thursday Night | 45°F | Partly Cloudy | 8 mph S | 1% |
| Friday | 79°F | Mostly Sunny | 2 to 7 mph SSW | 1% |
Forecast source: National Weather Service (api.weather.gov) for Dillon (45.218, -112.635). Updated through the day.
Growing snapshot for Dillon
Growing season
72 days
Hardiness zone
5a
More local growing data for Dillon: 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 Dillon). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.