Thermalito Weather Forecast

    • 58
    • 85

    Becoming Sunny

    • 61
    • 86

    Sunny

    • 62
    • 90

    Mostly Sunny

    • 63
    • 92

    Partly Sunny

    • 60
    • 85

    Mostly Sunny

    • 59
    • 88

    Mostly Sunny

Today 21 Sep Butte County Below 1000 ft

Mostly sunny. Highs 82 to 88. South Winds up to 10 Mph.

Tonight 21 Sep Butte County Below 1000 ft

Clear. Lows 54 to 61. Southeast Winds up to 10 Mph.

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Thermalito Temperature Statistics

September Temperature

Oroville Municipal Airport (1.9 miles)

  • Lowest 14 September, 2026

    51.7 °F

  • Average September

    72.8 °F

  • Highest 10 September, 2026

    105.7 °F

Climate (2021–2026)

Oroville Municipal Airport (1.9 miles)

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  • Average Low 2021–2026

    53.2 °F

  • Average 2021–2026

    64.9 °F

  • Average High 2021–2026

    76.8 °F
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