Big Lake Weather Forecast

    • 42
    • 64

    Chance Rain

    • 53
    • 79

    Partly Sunny

    • 43
    • 75

    Mostly Sunny

    • 54
    • 78

    Mostly Sunny

    • 57
    • 87

    Slight Chance Thunderstorms

    • 54
    • 78

    Breezy

Today 9 May Western and Central Chouteau County

Cooler. Mostly cloudy with a 20 percent chance of rain. Highs in the mid 60s. West Winds 5 to 10 Mph.

Tonight 9 May Western and Central Chouteau County

Partly cloudy. A 20 percent chance of rain in the evening. Lows in the lower 40s. Southwest Winds up to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Big Lake Temperature Statistics

May Temperature

Malmstrom Air Force Base (37.3 miles)

  • Lowest 6 May, 2026

    26.7 °F

  • Average May

    52.9 °F

  • Highest 3 May, 2026

    76.6 °F

Climate (2021–Present)

Malmstrom Air Force Base (37.3 miles)

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  • Average Low 2021–2026

    35.9 °F

  • Average 2021–2026

    47.7 °F

  • Average High 2021–2026

    59 °F
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