Heart Butte, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Heart Butte, a community in Pondera County, Montana.
This Afternoon
54°F
Partly Sunny
Partly sunny. High near 54, with temperatures falling to around 45 in the afternoon. West southwest wind around 6 mph.
7-day forecast for Heart Butte
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 54°F | Partly Sunny | 6 mph WSW | 0% |
| Tonight | 32°F | Mostly Cloudy | 5 to 10 mph WSW | 0% |
| Wednesday | 50°F | Mostly Sunny | 5 mph WNW | 0% |
| Wednesday Night | 34°F | Mostly Clear | 3 to 12 mph SW | 0% |
| Thursday | 46°F | Mostly Sunny | 12 to 21 mph WSW | 1% |
| Thursday Night | 36°F | Partly Cloudy | 20 to 29 mph WSW | 1% |
| Friday | 46°F | Mostly Sunny then Slight Chance Light Rain | 24 to 31 mph WSW | 16% |
| Friday Night | 36°F | Slight Chance Light Rain then Mostly Cloudy | 22 to 35 mph WSW | 16% |
| Saturday | 49°F | Partly Sunny | 9 to 22 mph WSW | 1% |
| Saturday Night | 40°F | Mostly Cloudy | 12 mph SW | 4% |
| Sunday | 57°F | Partly Sunny then Slight Chance Light Rain | 10 to 22 mph SW | 16% |
| Sunday Night | 37°F | Slight Chance Light Rain then Mostly Cloudy | 7 to 20 mph WSW | 16% |
| Monday | 51°F | Partly Sunny | 8 mph WSW | 8% |
| Monday Night | 39°F | Mostly Cloudy | 7 to 10 mph SW | 6% |
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 Nov 4, 2026.