Lewistown Heights Weather Forecast

    • 35
    • 55

    Decreasing Clouds

    • 33
    • 47

    Partly Sunny

    • 18
    • 48

    Rain/Snow Likely

    • 30
    • 42

    Chance Rain/Snow

    • 19
    • 47

    Chance Snow

    • 20
    • 37

    Partly Sunny

    • 15
    • 39

    Mostly Cloudy

Today 15 Dec Fergus County below 4500ft

Mostly sunny late in the morning then becoming mostly cloudy. Highs around 50. Southwest Winds 10 to 20 Mph. Gusts up to 30 Mph increasing to 40 Mph in the afternoon.

Tonight 15 Dec Fergus County below 4500ft

Windy. Mostly cloudy in the evening then clearing. Lows in the upper 30s. Southwest Winds 15 to 30 Mph with Gusts to around 60 Mph shifting to the west 25 to 35 Mph with Gusts to around 75 Mph after midnight.

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Lewistown Heights Temperature Statistics

December Temperature

Lewistown, Lewistown Municipal Airport (1.9 miles)

  • Lowest 12 December, 2025

    1 °F

  • Average December

    27.1 °F

  • Highest 11 December, 2025

    48.9 °F

Climate (2020–Present)

Lewistown, Lewistown Municipal Airport (1.9 miles)

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  • Average Low 2020–2025

    32.4 °F

  • Average 2020–2025

    44.6 °F

  • Average High 2020–2025

    56.5 °F
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