Grape Mountain Weather Forecast
- 43
- 67
Mostly Sunny
- 41
- 66
Decreasing Clouds
- 44
- 67
Mostly Sunny
- 48
- 78
Partly Sunny
- 47
- 75
Mostly Sunny
- 50
- 81
Partly Sunny
- 46
- 75
Mostly Sunny
Today 7 May Boise Mountains
Sunny. Highs 62 to 77. Breezy.
Tonight 7 May Boise Mountains
Mostly clear. Lows 32 to 47.
Grape Mountain Temperature Statistics
May Temperature
Boise Air Terminal (23.6 miles)
Lowest 1 May, 2026
48.7 °FAverage May
64.8 °FHighest 3 May, 2026
81.6 °F
Climate (2021–Present)
Boise Air Terminal (23.6 miles)
Average Low 2021–2026
44.2 °FAverage 2021–2026
55 °FAverage High 2021–2026
66.2 °F