Lewisville Weather Forecast

    • 32
    • 56

    Partly Sunny

    • 33
    • 60

    Partly Sunny

    • 33
    • 64

    Mostly Sunny

    • 38
    • 68

    Mostly Sunny

    • 42
    • 72

    Partly Sunny

    • 43
    • 74

    Chance Rain

Today 28 Apr Upper Snake River Plain

Mostly sunny. Highs 50 to 57. Southwest Winds up to 10 Mph. Increasing to 10 to 15 Mph in the afternoon.

Tonight 28 Apr Upper Snake River Plain

Partly cloudy. Lows 28 to 35. West Winds around 10 Mph. Shifting to north up to 10 Mph after midnight.

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Lewisville Temperature Statistics

April Temperature

Idaho Falls Regional Airport (12.4 miles)

  • Lowest 18 April, 2026

    20.6 °F

  • Average April

    45.6 °F

  • Highest 10 April, 2026

    76.6 °F

Climate (2021–Present)

Idaho Falls Regional Airport (12.4 miles)

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  • Average Low 2021–2026

    33.9 °F

  • Average 2021–2026

    47 °F

  • Average High 2021–2026

    59.9 °F
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