Thornton Weather Forecast

    • 51
    • 83

    Becoming Sunny

    • 53
    • 86

    Mostly Sunny

    • 52
    • 88

    Mostly Sunny

    • 50
    • 88

    Mostly Sunny

    • 51
    • 88

    Mostly Sunny

    • 52
    • 91

    Mostly Sunny

Today 23 Jul Upper Snake River Plain

Sunny. Highs 80 to 88. West Winds up to 10 Mph. Shifting to southwest with Gusts to around 25 Mph in the afternoon.

Tonight 23 Jul Upper Snake River Plain

Mostly clear. Lows 48 to 57. Southwest Winds 10 to 15 Mph. Shifting to northwest after midnight.

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Thornton Temperature Statistics

July Temperature

Rexburg, Rexburg-Madison County Airport (5 miles)

  • Lowest 6 July, 2025

    47.6 °F

  • Average July

    70.9 °F

  • Highest 1 July, 2025

    96.7 °F

Climate (2020–Present)

Rexburg, Rexburg-Madison County Airport (5 miles)

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  • Average Low 2020–2025

    33.4 °F

  • Average 2020–2025

    45.4 °F

  • Average High 2020–2025

    57.5 °F
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