Knowlton Heights Weather Forecast

    • 44
    • 63

    Chance Rain Showers

    • 49
    • 70

    Partly Sunny

    • 45
    • 72

    Chance Rain Showers

    • 44
    • 68

    Areas Fog

    • 48
    • 72

    Partly Sunny

    • 52
    • 76

    Partly Sunny

    • 53
    • 79

    Partly Sunny

Today 4 Sep Lower Treasure Valley

Mostly sunny. Areas of fog. A chance of rain Showers with a slight chance of Thunderstorms this afternoon. Thunderstorms may produce heavy rainfall this afternoon. Chance of rain 30 percent. Highs 63 to 68. Light Winds.

Tonight 4 Sep Lower Treasure Valley

Partly cloudy with scattered Showers. Areas of fog. Chance of rain 30 percent. Lows 43 to 48. Light Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Knowlton Heights Temperature Statistics

September Temperature

Caldwell - Caldwell Industrial Airport (9.3 miles)

  • Lowest 2 September, 2026

    57 °F

  • Average September

    69.9 °F

  • Highest 1 September, 2026

    84 °F

Climate (2021–2026)

Caldwell - Caldwell Industrial Airport (9.3 miles)

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  • Average Low 2021–2026

    42 °F

  • Average 2021–2026

    53.4 °F

  • Average High 2021–2026

    65.4 °F
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