Rexburg Weather Forecast

    • 53
    • 84

    Increasing Clouds

    • 50
    • 83

    Mostly Cloudy

    • 52
    • 84

    Mostly Sunny

    • 56
    • 89

    Partly Sunny

    • 59
    • 93

    Chance Rain

    • 55
    • 87

    Slight Chance Thunderstorms

Today 17 Aug Upper Snake River Plain

Partly sunny. Highs 79 to 86. Northeast Winds up to 10 Mph. Shifting to southwest around 10 Mph in the afternoon.

Tonight 17 Aug Upper Snake River Plain

Mostly cloudy. Lows 50 to 59. Southwest Winds around 10 Mph. Shifting to northeast after midnight.

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Rexburg Temperature Statistics

August Temperature

Rexburg, Rexburg-Madison County Airport (0.6 miles)

  • Lowest 4 August, 2026

    42.7 °F

  • Average August

    70.4 °F

  • Highest 1 August, 2026

    100.7 °F

Climate (2021–2026)

Rexburg, Rexburg-Madison County Airport (0.6 miles)

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  • Average Low 2021–2026

    34.3 °F

  • Average 2021–2026

    46.4 °F

  • Average High 2021–2026

    58.5 °F
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