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
83°F
Sunny
Sunny, with a high near 83. North northwest wind around 5 mph.
7-day forecast for Miles City
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 83°F | Sunny | 5 mph NNW | 7% |
| Tonight | 58°F | Chance Showers And Thunderstorms | 8 mph NE | 66% |
| Saturday | 66°F | Showers And Thunderstorms | 8 to 13 mph NE | 94% |
| Saturday Night | 54°F | Showers And Thunderstorms | 14 mph ENE | 92% |
| Sunday | 65°F | Rain Showers | 12 mph E | 91% |
| Sunday Night | 52°F | Slight Chance Rain Showers then Mostly Cloudy | 6 to 9 mph ESE | 19% |
| Monday | 72°F | Partly Sunny | 6 to 9 mph SE | 7% |
| Monday Night | 52°F | Mostly Clear | 9 to 15 mph SE | 0% |
| Tuesday | 79°F | Sunny | 5 to 9 mph SSE | 0% |
| Tuesday Night | 54°F | Partly Cloudy | 3 to 7 mph SE | 3% |
| Wednesday | 81°F | Mostly Sunny | 3 mph SSE | 7% |
| Wednesday Night | 54°F | Mostly Clear | 5 mph SE | 5% |
| Thursday | 82°F | Sunny | 2 to 6 mph SE | 3% |
| Thursday Night | 56°F | Mostly Clear | 6 to 9 mph ESE | 3% |
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 Sep 19, 2026.