Heart Lake Weather Forecast
- 31
- 50
Breezy
- 31
- 50
Breezy
- 29
- 51
Mostly Sunny
- 41
- 59
Mostly Sunny
- 40
- 58
Mostly Sunny
- 42
- 63
Mostly Sunny
- 36
- 58
Mostly Sunny
Today 7 May Boise Mountains
Sunny. Highs 62 to 77. Breezy.
Tonight 7 May Boise Mountains
Mostly clear. Lows 32 to 47.
Heart Lake Temperature Statistics
May Temperature
Boise Air Terminal (41 miles)
Lowest 1 May, 2026
48.7 °FAverage May
64.8 °FHighest 3 May, 2026
81.6 °F
Climate (2021–Present)
Boise Air Terminal (41 miles)
Average Low 2021–2026
44.2 °FAverage 2021–2026
55 °FAverage High 2021–2026
66.2 °F