Dillon, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Dillon, a city in Beaverhead County, Montana.
This Afternoon
46°F
Mostly Sunny
Mostly sunny. High near 46, with temperatures falling to around 41 in the afternoon. South southeast wind around 2 mph.
7-day forecast for Dillon
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 46°F | Mostly Sunny | 2 mph SSE | 0% |
| Tonight | 25°F | Patchy Fog then Mostly Cloudy | 5 mph SW | 0% |
| Wednesday | 46°F | Mostly Sunny | 2 mph N | 0% |
| Wednesday Night | 24°F | Mostly Clear | 2 to 9 mph S | 0% |
| Thursday | 46°F | Mostly Sunny | 3 to 9 mph S | 7% |
| Thursday Night | 25°F | Partly Cloudy | 6 to 10 mph SSW | 7% |
| Friday | 47°F | Mostly Sunny | 8 to 12 mph SSW | 4% |
| Friday Night | 27°F | Partly Cloudy | 9 to 14 mph SSW | 4% |
| Saturday | 50°F | Mostly Sunny | 5 to 13 mph SSW | 0% |
| Saturday Night | 27°F | Partly Cloudy | 6 to 14 mph S | 0% |
| Sunday | 54°F | Mostly Sunny | 8 to 14 mph SSW | 1% |
| Sunday Night | 29°F | Partly Cloudy | 10 mph SSW | 1% |
| Monday | 53°F | Partly Sunny | 2 to 9 mph SSW | 0% |
| Monday Night | 30°F | Mostly Cloudy | 5 to 10 mph S | 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 Nov 3, 2026.