Sylvan Lake Weather Forecast

    • 46
    • 66

    Decreasing Clouds

    • 46
    • 66

    Partly Sunny

    • 44
    • 70

    Rain Likely

    • 42
    • 51

    Chance Rain

    • 46
    • 61

    Slight Chance Rain

    • 48
    • 69

    Chance Rain

Today 23 May Kootenai/Cabinet Region

Partly cloudy. Highs in the mid 70s to lower 80s.

Tonight 23 May Kootenai/Cabinet Region

Partly cloudy. Lows in the 40s.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Sylvan Lake Temperature Statistics

May Temperature

Mullan Pass, Mullan Pass Vor (36 miles)

  • Lowest 17 May, 2026

    26.1 °F

  • Average May

    43.8 °F

  • Highest 12 May, 2026

    68 °F

Climate (2021–Present)

Mullan Pass, Mullan Pass Vor (36 miles)

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  • Average Low 2021–2026

    34.1 °F

  • Average 2021–2026

    40 °F

  • Average High 2021–2026

    46.4 °F
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