Heart Butte, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Heart Butte, a community in Pondera County, Montana.
Overnight
39°F
Mostly Clear
Mostly clear, with a low around 39. West wind around 5 mph.
7-day forecast for Heart Butte
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 39°F | Mostly Clear | 5 mph W | 0% |
| Tuesday | 73°F | Mostly Sunny | 2 to 7 mph NNE | 1% |
| Tuesday Night | 50°F | Mostly Clear | 6 to 10 mph WSW | 1% |
| Wednesday | 80°F | Mostly Sunny | 10 mph W | 0% |
| Wednesday Night | 55°F | Mostly Clear | 8 to 13 mph WSW | 0% |
| Thursday | 86°F | Sunny | 10 to 14 mph W | 0% |
| Thursday Night | 56°F | Mostly Clear | 5 to 14 mph WSW | 0% |
| Friday | 89°F | Sunny | 3 to 21 mph W | 0% |
| Friday Night | 59°F | Clear | 12 to 20 mph W | 0% |
| Saturday | 86°F | Sunny | 6 to 18 mph W | 0% |
| Saturday Night | 57°F | Mostly Clear | 8 to 16 mph W | 0% |
| Sunday | 81°F | Mostly Sunny | 5 to 12 mph WNW | 1% |
| Sunday Night | 55°F | Partly Cloudy | 5 to 13 mph NW | 7% |
| Monday | 79°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 3 to 9 mph NNE | 15% |
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 Aug 4, 2026.