Hamilton Mountain Weather Forecast

    • 55
    • 69

    Sunny

    • 57
    • 73

    Sunny

    • 59
    • 75

    Mostly Sunny

    • 59
    • 71

    Partly Sunny

    • 56
    • 66

    Chance Rain Showers

    • 54
    • 63

    Chance Rain Showers

Today 15 Sep Lassen-Eastern Plumas-Eastern Sierra Counties

Sunny. Highs 74 to 84. Light Winds becoming east around 10 Mph in the afternoon.

Tonight 15 Sep Lassen-Eastern Plumas-Eastern Sierra Counties

Clear. Lows 40 to 50. Light Winds.

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Hamilton Mountain Temperature Statistics

September Temperature

Chico Municipal Airport (64 miles)

  • Lowest 5 September, 2025

    62.6 °F

  • Average September

    74.2 °F

  • Highest 1 September, 2025

    102.2 °F

Climate (2020–Present)

Chico Municipal Airport (64 miles)

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  • Average Low 2020–2025

    52.3 °F

  • Average 2020–2025

    61.2 °F

  • Average High 2020–2025

    75.4 °F
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