Custer, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Custer, a community in Yellowstone County, Montana.
Today
78°F
Sunny
Sunny, with a high near 78. West northwest wind 0 to 6 mph.
7-day forecast for Custer
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 78°F | Sunny | 0 to 6 mph WNW | 0% |
| Tonight | 51°F | Partly Cloudy | 0 to 6 mph E | 1% |
| Wednesday | 88°F | Sunny | 0 to 6 mph WSW | 0% |
| Wednesday Night | 55°F | Partly Cloudy | 0 to 5 mph N | 0% |
| Thursday | 94°F | Sunny | 0 to 7 mph W | 0% |
| Thursday Night | 59°F | Mostly Clear | 0 to 7 mph NNE | 0% |
| Friday | 100°F | Sunny | 0 to 5 mph W | 0% |
| Friday Night | 63°F | Mostly Clear | 2 to 7 mph N | 0% |
| Saturday | 97°F | Sunny | 2 to 10 mph NW | 0% |
| Saturday Night | 64°F | Partly Cloudy | 2 to 8 mph NE | 1% |
| Sunday | 95°F | Mostly Sunny | 2 to 9 mph N | 0% |
| Sunday Night | 65°F | Partly Cloudy | 5 to 9 mph NE | 7% |
| Monday | 92°F | Mostly Sunny | 5 to 10 mph NE | 4% |
| Monday Night | 65°F | Partly Cloudy | 7 to 10 mph ENE | 14% |
Forecast source: National Weather Service (api.weather.gov) for Custer (46.129, -107.556). Updated through the day.
Growing snapshot for Custer
Last spring frost
May 22
First fall frost
Sep 22
Growing season
121 days
Hardiness zone
4b
More local growing data for Custer: nearby ZIP 59024 weather · frost dates · planting calendar · Montana frost dates
Nearby towns & communities
Acton
Ballantine
Billings
Broadview
Huntley
Laurel
Lockwood
Mountain View Colony
Nibbe
Shepherd
Worden
Climate data from the nearest NOAA station, Pompeys Pillar 15N, Mt (11 mi from Custer). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.