Chessman Reservoir Weather Forecast

    • 26
    • 36

    Increasing Clouds

    • 32
    • 42

    Breezy

    • 35
    • 43

    Chance Rain/Snow

    • 30
    • 42

    Snow Likely

    • 23
    • 36

    Snow Likely

    • 23
    • 37

    Slight Chance Snow

Today 21 Feb Upper Blackfoot and MacDonald Pass

Partly cloudy. Highs 30 to 40. West Winds 10 to 15 Mph with Gusts to around 30 Mph.

Tonight 21 Feb Upper Blackfoot and MacDonald Pass

Mostly cloudy. Lows 25 to 30. Southwest Winds 5 to 15 Mph with Gusts to around 30 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Chessman Reservoir Temperature Statistics

February Temperature

Helena Regional Airport (13 miles)

  • Lowest 11 February, 2025

    -23.1 °F

  • Average February

    5.6 °F

  • Highest 1 February, 2025

    43.6 °F

Climate (2020–Present)

Helena Regional Airport (13 miles)

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  • Average Low 2020–2025

    35.9 °F

  • Average 2020–2025

    47.2 °F

  • Average High 2020–2025

    59 °F
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