Merrimac Weather Forecast

    • 53
    • 62

    Sunny

    • 57
    • 74

    Sunny

    • 58
    • 71

    Sunny

    • 58
    • 71

    Sunny

    • 59
    • 73

    Sunny

    • 59
    • 75

    Mostly Sunny

Today 13 Sep Sierra Nevada of Tehama-Butte-Plumas Counties Above 3000 ft

Haze until late afternoon. Sunny. Highs 60 to 70. West Winds up to 10 Mph. Gusts up to 20 Mph in the afternoon.

Tonight 13 Sep Sierra Nevada of Tehama-Butte-Plumas Counties Above 3000 ft

Clear. Lows 40 to 50. Light Winds becoming northeast 10 to 15 Mph with Gusts to around 30 Mph after midnight.

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  • Temperature Real-Time

Merrimac Temperature Statistics

September Temperature

Oroville Municipal Airport (24.9 miles)

  • Lowest 5 September, 2026

    53.7 °F

  • Average September

    73.6 °F

  • Highest 10 September, 2026

    105.7 °F

Climate (2021–2026)

Oroville Municipal Airport (24.9 miles)

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  • Average Low 2021–2026

    53.2 °F

  • Average 2021–2026

    64.9 °F

  • Average High 2021–2026

    76.9 °F
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