Middleton Weather Forecast

    • 45
    • 74

    Sunny

    • 47
    • 81

    Sunny

    • 49
    • 86

    Sunny

    • 52
    • 87

    Partly Sunny

    • 54
    • 88

    Partly Sunny

    • 55
    • 87

    Partly Sunny

Today 15 Sep Lower Treasure Valley

Areas of fog this morning. Sunny. Highs 70 to 75. Northwest Winds up to 10 Mph.

Tonight 15 Sep Lower Treasure Valley

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

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Middleton Temperature Statistics

September Temperature

Caldwell - Caldwell Industrial Airport (4.3 miles)

  • Lowest 13 September, 2025

    51.1 °F

  • Average September

    72.7 °F

  • Highest 1 September, 2025

    97 °F

Climate (2020–Present)

Caldwell - Caldwell Industrial Airport (4.3 miles)

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  • Average Low 2020–2025

    41.5 °F

  • Average 2020–2025

    53 °F

  • Average High 2020–2025

    65 °F
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