Middleton Weather Forecast

    • 46
    • 75

    Mostly Sunny

    • 47
    • 79

    Mostly Sunny

    • 50
    • 83

    Partly Sunny

    • 54
    • 86

    Partly Sunny

    • 52
    • 82

    Mostly Sunny

    • 53
    • 86

    Mostly Sunny

Today 31 May Lower Treasure Valley

Sunny. Highs 72 to 77. Northwest Winds 10 to 15 Mph.

Tonight 31 May Lower Treasure Valley

Mostly clear. Lows 45 to 50. Northwest Winds 10 to 15 Mph.

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Middleton Temperature Statistics

May Temperature

Caldwell - Caldwell Industrial Airport (4.3 miles)

  • Lowest 17 May, 2026

    41 °F

  • Average May

    63.6 °F

  • Highest 12 May, 2026

    93 °F

Climate (2021–Present)

Caldwell - Caldwell Industrial Airport (4.3 miles)

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  • Average Low 2021–2026

    42.1 °F

  • Average 2021–2026

    53.5 °F

  • Average High 2021–2026

    65.5 °F
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