Henrys Lake State Park Weather Forecast
- 47
- 71
Slight Chance Thunderstorms
- 50
- 74
Mostly Sunny
- 50
- 75
Slight Chance Thunderstorms
- 48
- 77
Partly Sunny
- 50
- 77
Mostly Sunny
- 51
- 80
Mostly Sunny
Today 23 Jul Centennial Mountains/Island Park
Sunny. A slight chance of Showers and Thunderstorms in the afternoon. Some Thunderstorms may produce gusty Winds in the afternoon. Highs 75 to 83.
Tonight 23 Jul Centennial Mountains/Island Park
Mostly clear. Lows 45 to 55.
Henrys Lake State Park Temperature Statistics
July Temperature
West Yellowstone (13 miles)
Lowest 6 July, 2025
33.8 °FAverage July
60.7 °FHighest 1 July, 2025
86 °F
Climate (2020–Present)
West Yellowstone (13 miles)
Average Low 2020–2025
33.4 °FAverage 2020–2025
50.7 °FAverage High 2020–2025
66.1 °F