Middleton Weather Forecast

    • 42
    • 72

    Mostly Sunny

    • 47
    • 78

    Mostly Sunny

    • 49
    • 81

    Mostly Sunny

    • 49
    • 80

    Partly Sunny

    • 48
    • 79

    Mostly Sunny

    • 49
    • 82

    Mostly Sunny

Today 14 Sep Lower Treasure Valley

Areas of fog this morning. Sunny. Highs 68 to 73. West Winds up to 10 Mph.

Tonight 14 Sep Lower Treasure Valley

Mostly clear. Lows 41 to 46. North Winds up to 10 Mph in the Evening, becoming light after midnight.

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Middleton Temperature Statistics

September Temperature

Caldwell - Caldwell Industrial Airport (4.3 miles)

  • Lowest 8 September, 2026

    45 °F

  • Average September

    63.4 °F

  • Highest 10 September, 2026

    86 °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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