Yellowstone Weather Forecast

    • 28
    • 48

    Snow Showers

    • 21
    • 42

    Snow Showers

    • 29
    • 52

    Partly Sunny

    • 34
    • 59

    Partly Sunny

    • 37
    • 65

    Slight Chance Thunderstorms

    • 38
    • 67

    Partly Sunny

Today 20 May Yellowstone National Park

Partly cloudy this Morning, then mostly cloudy with a chance of rain Showers, Thunderstorms and snow Showers this afternoon. Highs in the upper 40s. Southwest Winds around 10 Mph with Gusts up to 25 Mph. Chance of precipitation 30 percent.

Tonight 20 May Yellowstone National Park

Snow Showers. Rain Showers with a slight chance of Thunderstorms in the Evening, then rain Showers after midnight. Snow accumulation around 5 Inches. Lows in the upper 20s. West Winds around 10 Mph with Gusts up to 25 Mph in the evening. Chance of precipitation 90 percent.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Yellowstone Temperature Statistics

May Temperature

Yellowstone Lake (5 miles)

  • Lowest 6 May, 2026

    16.6 °F

  • Average May

    39.8 °F

  • Highest 13 May, 2026

    72.6 °F

Climate (2021–Present)

Yellowstone Lake (5 miles)

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

  • Average Low 2021–2026

    23.1 °F

  • Average 2021–2026

    35.9 °F

  • Average High 2021–2026

    48.7 °F
Get WillyWeather+ to remove ads