Heart Butte, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Heart Butte, a community in Pondera County, Montana.
Tonight
49°F
Mostly Cloudy
Mostly cloudy, with a low around 49. West northwest wind around 2 mph.
7-day forecast for Heart Butte
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 49°F | Mostly Cloudy | 2 mph WNW | 1% |
| Saturday | 65°F | Mostly Sunny | 1 to 10 mph ENE | 2% |
| Saturday Night | 48°F | Mostly Clear | 5 to 10 mph S | 0% |
| Sunday | 71°F | Sunny | 6 mph SSW | 0% |
| Sunday Night | 48°F | Mostly Clear | 8 mph SW | 0% |
| Monday | 73°F | Sunny | 6 to 10 mph WSW | 0% |
| Monday Night | 51°F | Mostly Clear | 10 mph WSW | 0% |
| Tuesday | 70°F | Mostly Sunny | 8 mph W | 0% |
| Tuesday Night | 50°F | Partly Cloudy | 7 mph SW | 0% |
| Wednesday | 70°F | Mostly Sunny | 6 to 13 mph WSW | 0% |
| Wednesday Night | 50°F | Partly Cloudy | 6 to 9 mph WSW | 2% |
| Thursday | 72°F | Mostly Sunny | 7 mph SSW | 2% |
| Thursday Night | 51°F | Partly Cloudy | 7 mph SSW | 2% |
| Friday | 70°F | Mostly Sunny | 5 to 8 mph SW | 4% |
Forecast source: National Weather Service (api.weather.gov) for Heart Butte (48.290, -112.834). Updated through the day.
Growing snapshot for Heart Butte
Last spring frost
Jun 8
First fall frost
Sep 5
Growing season
88 days
Hardiness zone
4b
More local growing data for Heart Butte: nearby ZIP 59448 weather · frost dates · planting calendar · Montana frost dates
Nearby towns & communities
Birch Creek Colony
Brady
Conrad
Dupuyer
Kingsbury Colony
Little Browning
Midway Colony
Pondera Colony
Valier
Climate data from the nearest NOAA station, E Glacier, Mt (21.4 mi from Heart Butte). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.