Sylvan Lake Weather Forecast

    • 42
    • 69

    Areas Smoke

    • 43
    • 76

    Areas Smoke

    • 45
    • 80

    Mostly Sunny

    • 45
    • 80

    Partly Sunny

    • 44
    • 79

    Mostly Sunny

    • 45
    • 78

    Slight Chance Thunderstorms

Today 5 Aug Yellowstone National Park

Sunny. Smoke this Morning, then Areas of smoke this afternoon. Highs in the lower 70s. Southwest Winds 10 to 15 Mph.

Tonight 5 Aug Yellowstone National Park

Mostly clear. Areas of smoke. Lows in the mid 40s. Southwest Winds 10 to 15 Mph with Gusts up to 25 Mph in the evening.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Sylvan Lake Temperature Statistics

August Temperature

Yellowstone Lake (13 miles)

  • Lowest 3 August, 2026

    41 °F

  • Average August

    60.9 °F

  • Highest 1 August, 2026

    85.6 °F

Climate (2021–2026)

Yellowstone Lake (13 miles)

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

  • Average Low 2021–2026

    23 °F

  • Average 2021–2026

    35.7 °F

  • Average High 2021–2026

    48.5 °F
Get WillyWeather+ to remove ads