Merrimac Weather Forecast

    • 71
    • 78

    Increasing Clouds

    • 66
    • 76

    Mostly Sunny

    • 64
    • 75

    Sunny

    • 65
    • 78

    Sunny

    • 66
    • 77

    Sunny

    • 64
    • 77

    Sunny

Today 21 Jul Sierra Nevada of Tehama-Butte-Plumas Counties Above 3000 ft

Partly cloudy. A slight chance of rain in the afternoon. Highs 77 to 87. Light Winds becoming west up to 10 Mph in the afternoon.

Tonight 21 Jul Sierra Nevada of Tehama-Butte-Plumas Counties Above 3000 ft

Mostly clear. Lows 58 to 68. Light Winds.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Merrimac Temperature Statistics

July Temperature

Oroville Municipal Airport (24.9 miles)

  • Lowest 8 July, 2026

    57.7 °F

  • Average July

    81.1 °F

  • Highest 15 July, 2026

    105.7 °F

Climate (2021–2026)

Oroville Municipal Airport (24.9 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    53.3 °F

  • Average 2021–2026

    65 °F

  • Average High 2021–2026

    76.9 °F
Get WillyWeather+ to remove ads