Heart Mountain Weather Forecast
- 35
- 50
Mostly Sunny
- 42
- 58
Partly Sunny
- 43
- 63
Breezy
- 49
- 65
Partly Sunny
- 41
- 63
Breezy
- 40
- 57
Slight Chance Thunderstorms
Today 9 May Beaverhead/Lemhi Highlands
Sunny. Highs 59 to 69.
Tonight 9 May Beaverhead/Lemhi Highlands
Mostly clear. Lows 34 to 44.
Heart Mountain Temperature Statistics
May Temperature
Rexburg, Rexburg-Madison County Airport (57.2 miles)
Lowest 6 May, 2026
28.7 °FAverage May
52.9 °FHighest 3 May, 2026
74.6 °F
Climate (2021–Present)
Rexburg, Rexburg-Madison County Airport (57.2 miles)
Average Low 2021–2026
34.4 °FAverage 2021–2026
46.4 °FAverage High 2021–2026
58.5 °F