Middleton Weather Forecast

    • 44
    • 76

    Becoming Sunny

    • 47
    • 77

    Mostly Sunny

    • 46
    • 78

    Sunny

    • 48
    • 80

    Mostly Sunny

    • 48
    • 81

    Partly Sunny

    • 47
    • 78

    Mostly Sunny

Today 28 Sep Lower Treasure Valley

Sunny. Highs 74 to 79. Northwest Winds 10 to 15 Mph with Gusts to 25 Mph.

Tonight 28 Sep Lower Treasure Valley

Mostly clear. Lows 43 to 48. Northwest Winds 10 to 15 Mph.

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Middleton Temperature Statistics

September Temperature

Caldwell - Caldwell Industrial Airport (4.3 miles)

  • Lowest 15 September, 2026

    44.1 °F

  • Average September

    65.1 °F

  • Highest 24 September, 2026

    93 °F

Climate (2021–2026)

Caldwell - Caldwell Industrial Airport (4.3 miles)

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  • Average Low 2021–2026

    42 °F

  • Average 2021–2026

    53.4 °F

  • Average High 2021–2026

    65.3 °F
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