Miles City, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Miles City, a city in Custer County, Montana.
Today
78°F
Sunny
Sunny, with a high near 78. West northwest wind 5 to 10 mph.
7-day forecast for Miles City
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 78°F | Sunny | 5 to 10 mph WNW | 0% |
| Tonight | 50°F | Mostly Clear | 2 to 8 mph ESE | 1% |
| Wednesday | 87°F | Mostly Sunny | 5 mph SW | 0% |
| Wednesday Night | 55°F | Partly Cloudy | 2 to 6 mph S | 0% |
| Thursday | 95°F | Sunny | 5 mph WSW | 0% |
| Thursday Night | 59°F | Mostly Clear | 6 mph NNE | 0% |
| Friday | 98°F | Sunny | 3 to 7 mph E | 0% |
| Friday Night | 62°F | Mostly Clear | 6 to 10 mph NE | 0% |
| Saturday | 97°F | Sunny | 6 to 12 mph N | 0% |
| Saturday Night | 64°F | Mostly Clear | 7 to 12 mph NE | 2% |
| Sunday | 95°F | Mostly Sunny | 7 to 12 mph NE | 1% |
| Sunday Night | 64°F | Partly Cloudy | 12 mph NE | 12% |
| Monday | 93°F | Mostly Sunny | 9 to 13 mph NE | 9% |
| Monday Night | 63°F | Partly Cloudy then Chance Rain Showers | 10 to 14 mph ENE | 34% |
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 Aug 4, 2026.