Island Park Weather Forecast
- 37
- 73
Partly Sunny
- 36
- 79
Partly Sunny
- 41
- 82
Mostly Sunny
- 42
- 86
Partly Sunny
- 37
- 74
Slight Chance Rain
- 34
- 70
Partly Sunny
- 31
- 64
Partly Sunny
Today 10 May Centennial Mountains/Island Park
Sunny, warmer. Highs 68 to 76.
Tonight 10 May Centennial Mountains/Island Park
Partly cloudy. Lows 38 to 48.
Island Park Temperature Statistics
May Temperature
West Yellowstone (21.7 miles)
Lowest 6 May, 2026
14 °FAverage May
44.5 °FHighest 7 May, 2026
64.4 °F
Climate (2021–Present)
West Yellowstone (21.7 miles)
Average Low 2021–2026
33.8 °FAverage 2021–2026
51 °FAverage High 2021–2026
66.3 °F