Thornton Weather Forecast

    • 38
    • 68

    Breezy

    • 37
    • 68

    Breezy

    • 32
    • 64

    Breezy

    • 31
    • 52

    Chance Rain/Snow

    • 29
    • 51

    Chance Rain

    • 32
    • 58

    Mostly Cloudy

    • 36
    • 65

    Partly Sunny

Today 14 May Upper Snake River Plain

Sunny, Windy, cooler. Highs 64 to 73. Southwest Winds 10 to 20 Mph. Increasing to 20 to 30 Mph in the afternoon.

Tonight 14 May Upper Snake River Plain

Mostly clear. Windy. Lows 34 to 42. Southwest Winds 20 to 30 Mph. Decreasing to 10 to 15 Mph after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Thornton Temperature Statistics

May Temperature

Rexburg, Rexburg-Madison County Airport (5 miles)

  • Lowest 6 May, 2026

    28.7 °F

  • Average May

    55.6 °F

  • Highest 12 May, 2026

    82.9 °F

Climate (2021–Present)

Rexburg, Rexburg-Madison County Airport (5 miles)

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  • Average Low 2021–2026

    34.4 °F

  • Average 2021–2026

    46.5 °F

  • Average High 2021–2026

    58.5 °F
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