Lewisville Weather Forecast

    • 51
    • 88

    Mostly Sunny

    • 43
    • 91

    Breezy

    • 40
    • 69

    Breezy

    • 40
    • 73

    Breezy

    • 35
    • 68

    Breezy

    • 33
    • 61

    Partly Sunny

Today 12 May Upper Snake River Plain

Sunny. Highs 83 to 90. Northeast Winds up to 10 Mph. Shifting to southwest in the afternoon.

Tonight 12 May Upper Snake River Plain

Partly cloudy. Lows 48 to 58. Southeast Winds around 10 Mph. Shifting to northeast after midnight.

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Lewisville Temperature Statistics

May Temperature

Idaho Falls Regional Airport (12.4 miles)

  • Lowest 6 May, 2026

    27.6 °F

  • Average May

    53.4 °F

  • Highest 3 May, 2026

    75.7 °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

    46.9 °F

  • Average High 2021–2026

    59.9 °F
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