Chessman Reservoir Weather Forecast

    • 20
    • 41

    Chance Snow

    • 19
    • 31

    Slight Chance Snow

    • 25
    • 35

    Snow Likely

    • 33
    • 41

    Snow Likely

    • 23
    • 40

    Snow Likely

    • 18
    • 32

    Snow Likely

    • 25
    • 38

    Partly Sunny

Today 13 Mar Upper Blackfoot and MacDonald Pass

Breezy. Mostly cloudy with a 20 percent chance of rain and snow. Near steady temperature around 40. West Winds 15 to 25 Mph with Gusts to around 40 Mph.

Tonight 13 Mar Upper Blackfoot and MacDonald Pass

Colder. Mostly cloudy with a 20 percent chance of snow. Lows 20 to 25. West Winds 10 to 20 Mph with Gusts to around 35 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Chessman Reservoir Temperature Statistics

March Temperature

Helena Regional Airport (13 miles)

  • Lowest 7 March, 2025

    21.8 °F

  • Average March

    40.5 °F

  • Highest 9 March, 2025

    62.1 °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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