Lewisville Weather Forecast

    • 34
    • 50

    Mostly Cloudy

    • 28
    • 47

    Mostly Cloudy

    • 23
    • 46

    Partly Sunny

    • 25
    • 47

    Partly Sunny

    • 31
    • 46

    Chance Rain/Snow

    • 34
    • 50

    Chance Rain/Snow

Today 11 Dec Upper Snake River Plain

Partly sunny. Patchy fog in the morning. Highs 42 to 52. Southwest Winds 10 to 15 Mph.

Tonight 11 Dec Upper Snake River Plain

Mostly cloudy. Lows 27 to 37. Southwest Winds 10 to 15 Mph.

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Lewisville Temperature Statistics

December Temperature

Idaho Falls Regional Airport (12.4 miles)

  • Lowest 3 December, 2025

    9 °F

  • Average December

    32.5 °F

  • Highest 9 December, 2025

    51.1 °F

Climate (2020–Present)

Idaho Falls Regional Airport (12.4 miles)

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  • Average Low 2020–2025

    33.3 °F

  • Average 2020–2025

    46.3 °F

  • Average High 2020–2025

    59 °F
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