Island Park Reservoir Weather Forecast
- 30
- 57
Sunny
- 34
- 62
Sunny
- 38
- 68
Mostly Sunny
- 40
- 68
Rain Showers Likely
- 33
- 58
Chance Rain Showers
- 35
- 62
Mostly Sunny
- 39
- 66
Mostly Sunny
Today 1 May Centennial Mountains/Island Park
Sunny. Highs 56 to 64.
Tonight 1 May Centennial Mountains/Island Park
Mostly clear. Lows 30 to 40.
Island Park Reservoir Temperature Statistics
May Temperature
West Yellowstone (27.3 miles)
Lowest
–Average May
–Highest
–
Climate (2020–Present)
West Yellowstone (27.3 miles)
Average Low 2020–2025
33.4 °FAverage 2020–2025
50.5 °FAverage High 2020–2025
65.7 °F