Harriman State Park Weather Forecast
- 31
- 56
Rain Showers
- 27
- 55
Partly Sunny
- 32
- 61
Mostly Sunny
- 35
- 67
Sunny
- 38
- 70
Chance Rain Showers
- 38
- 67
Rain Showers Likely
- 35
- 57
Rain Showers Likely
Today 29 Apr Centennial Mountains/Island Park
Partly sunny. A chance of rain Showers and a slight chance of Thunderstorms in the afternoon. Highs 53 to 62.
Tonight 29 Apr Centennial Mountains/Island Park
Mostly cloudy. A chance of rain Showers and a slight chance of Thunderstorms in the evening. Then a chance of rain Showers after midnight. Lows 30 to 38.
Harriman State Park Temperature Statistics
April Temperature
West Yellowstone (28.6 miles)
Lowest 27 April, 2025
24.8 °FAverage April
35.8 °FHighest 27 April, 2025
53.6 °F
Climate (2020–Present)
West Yellowstone (28.6 miles)
Average Low 2020–2025
33.4 °FAverage 2020–2025
50.5 °FAverage High 2020–2025
65.7 °F