Island Park Weather Forecast

    • 40
    • 67

    Isolated Thunderstorms

    • 43
    • 62

    Mostly Sunny

    • 48
    • 73

    Partly Sunny

    • 40
    • 63

    Chance Rain Showers

    • 41
    • 61

    Chance Rain Showers

    • 37
    • 60

    Chance Snow Showers

Today 11 May Bighorn Mountains West

Partly cloudy and breezy. Highs around 70. Southwest Winds 15 to 20 Mph. Gusts up to 35 Mph in the afternoon.

Tonight 11 May Bighorn Mountains West

Partly cloudy. Near steady temperature in the upper 40s. South Winds 10 to 15 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Island Park Temperature Statistics

May Temperature

Buffalo - Johnson County Airport (28 miles)

  • Lowest 6 May, 2026

    21.7 °F

  • Average May

    47.5 °F

  • Highest 2 May, 2026

    70.6 °F

Climate (2021–Present)

Buffalo - Johnson County Airport (28 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    36.9 °F

  • Average 2021–2026

    48.2 °F

  • Average High 2021–2026

    59.6 °F
Get WillyWeather+ to remove ads