Butte-Silver Bow, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Butte-Silver Bow, a community in Silver Bow County, Montana.
Overnight
48°F
Showers And Thunderstorms
Showers and thunderstorms. Cloudy, with a low around 48. North northwest wind around 10 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast for Butte-Silver Bow
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 48°F | Showers And Thunderstorms | 10 mph NNW | 96% |
| Saturday | 54°F | Showers And Thunderstorms | 6 to 9 mph N | 98% |
| Saturday Night | 41°F | Chance Light Rain then Mostly Cloudy | 2 to 6 mph ENE | 27% |
| Sunday | 65°F | Mostly Sunny | 5 mph WSW | 2% |
| Sunday Night | 42°F | Mostly Clear | 3 to 7 mph S | 1% |
| Monday | 70°F | Sunny | 6 mph SW | 0% |
| Monday Night | 45°F | Mostly Clear | 6 mph WSW | 0% |
| Tuesday | 71°F | Sunny | 2 to 6 mph SSW | 1% |
| Tuesday Night | 45°F | Partly Cloudy | 6 mph W | 1% |
| Wednesday | 72°F | Sunny | 5 to 8 mph SSW | 2% |
| Wednesday Night | 46°F | Mostly Clear | 6 to 13 mph SSW | 1% |
| Thursday | 73°F | Sunny | 12 mph S | 3% |
| Thursday Night | 47°F | Partly Cloudy | 9 to 15 mph S | 4% |
| Friday | 72°F | Mostly Sunny | 10 to 14 mph SSW | 7% |
Forecast source: National Weather Service (api.weather.gov) for Butte-Silver Bow (45.896, -112.660). Updated through the day.
Growing snapshot for Butte-Silver Bow
Last spring frost
Jun 13
First fall frost
Sep 5
Growing season
83 days
Hardiness zone
5a
More local growing data for Butte-Silver Bow: nearby ZIP 59750 weather · frost dates · planting calendar · Montana frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Butte Bert Mooney Ap, Mt (9.5 mi from Butte-Silver Bow). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.