Miles City, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Miles City, a city in Custer County, Montana.
This Afternoon
51°F
Sunny
Sunny. High near 51, with temperatures falling to around 45 in the afternoon. Southwest wind 2 to 6 mph.
7-day forecast for Miles City
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 51°F | Sunny | 2 to 6 mph SW | 0% |
| Tonight | 28°F | Patchy Fog | 3 mph SSE | 0% |
| Wednesday | 51°F | Patchy Fog then Partly Sunny | 5 mph W | 0% |
| Wednesday Night | 30°F | Patchy Fog | 3 mph SW | 0% |
| Thursday | 54°F | Patchy Fog then Mostly Sunny | 2 mph SSE | 0% |
| Thursday Night | 33°F | Partly Cloudy then Patchy Fog | 3 mph WNW | 0% |
| Friday | 55°F | Patchy Fog then Sunny | 3 to 8 mph WSW | 1% |
| Friday Night | 35°F | Partly Cloudy | 5 to 9 mph WSW | 5% |
| Saturday | 58°F | Sunny | 5 to 14 mph W | 2% |
| Saturday Night | 33°F | Mostly Clear | 5 mph SSW | 0% |
| Sunday | 64°F | Mostly Sunny | 5 to 8 mph SW | 0% |
| Sunday Night | 39°F | Partly Cloudy | 7 mph W | 0% |
| Monday | 58°F | Mostly Sunny | 6 mph WNW | 0% |
| Monday Night | 35°F | Partly Cloudy | 5 mph ESE | 1% |
Forecast source: National Weather Service (api.weather.gov) for Miles City (46.406, -105.839). Updated through the day.
Growing snapshot for Miles City
Last spring frost
May 8
First fall frost
Sep 30
Growing season
144 days
Hardiness zone
4b
More local growing data for Miles City: nearby ZIP 59301 weather · frost dates · planting calendar · Montana frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Miles City F Wiley Fld, Mt (4.7 mi from Miles City). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.