Sylvan Lake Weather Forecast

    • 37
    • 66

    Rain Showers

    • 35
    • 64

    Chance Rain Showers

    • 33
    • 66

    Slight Chance Thunderstorms

    • 34
    • 71

    Mostly Sunny

    • 37
    • 73

    Slight Chance Thunderstorms

    • 39
    • 73

    Slight Chance Thunderstorms

    • 39
    • 73

    Partly Sunny

Today 20 Jun Yellowstone National Park

Numerous Showers and scattered Thunderstorms. Some Thunderstorms may be severe. Breezy. Near steady temperature in the lower 60s. West Winds 15 to 20 Mph with Gusts up to 30 Mph. Chance of rain 60 percent.

Tonight 20 Jun Yellowstone National Park

Cloudy with Showers with a slight chance of Thunderstorms. Some Thunderstorms may be severe late this evening. Lows around 40. West Winds around 10 Mph with Gusts up to 20 Mph late this evening. Chance of rain 80 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Sylvan Lake Temperature Statistics

June Temperature

Yellowstone Lake (13 miles)

  • Lowest 3 June, 2026

    27.6 °F

  • Average June

    47.2 °F

  • Highest 6 June, 2026

    73.7 °F

Climate (2021–2026)

Yellowstone Lake (13 miles)

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  • Average Low 2021–2026

    23.1 °F

  • Average 2021–2026

    35.8 °F

  • Average High 2021–2026

    48.7 °F
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