Stewart Lake Weather Forecast

    • 49
    • 69

    Increasing Clouds

    • 36
    • 65

    Rain/Snow Likely

    • 35
    • 46

    Slight Chance Snow

    • 33
    • 51

    Partly Sunny

    • 26
    • 44

    Chance Snow

    • 29
    • 46

    Slight Chance Snow

Today 12 May Butte/Blackfoot Region

Mostly sunny. Highs in the mid 70s to lower 80s.

Tonight 12 May Butte/Blackfoot Region

Partly cloudy. Lows in the mid 40s to lower 50s.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Stewart Lake Temperature Statistics

May Temperature

Butte, Bert Mooney Airport (44.7 miles)

  • Lowest 6 May, 2026

    22.6 °F

  • Average May

    47.5 °F

  • Highest 3 May, 2026

    70.6 °F

Climate (2021–Present)

Butte, Bert Mooney Airport (44.7 miles)

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  • Average Low 2021–2026

    28.5 °F

  • Average 2021–2026

    42.4 °F

  • Average High 2021–2026

    55.8 °F
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