Middleton Weather Forecast

    • 54
    • 86

    Increasing Clouds

    • 55
    • 87

    Mostly Cloudy

    • 54
    • 85

    Partly Sunny

    • 48
    • 82

    Mostly Sunny

    • 50
    • 82

    Sunny

    • 55
    • 87

    Partly Sunny

Today 18 Sep Lower Treasure Valley

Sunny. Highs 83 to 88. East Winds up to 10 Mph with Gusts to 20 Mph.

Tonight 18 Sep Lower Treasure Valley

Increasing Clouds. Lows 54 to 60. Light Winds.

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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

    71.6 °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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