Rossmoor Weather Forecast

    • 46
    • 54

    Rain Showers

    • 45
    • 55

    Mostly Cloudy

    • 42
    • 55

    Partly Sunny

    • 37
    • 53

    Partly Sunny

    • 37
    • 51

    Partly Sunny

    • 37
    • 53

    Mostly Sunny

Today 5 Jan East Bay Interior Valleys

Mostly cloudy. A chance of rain. Highs in the mid 50s. Southeast Winds 5 to 15 Mph with Gusts to around 30 Mph.

Tonight 5 Jan East Bay Interior Valleys

Cloudy. A chance of Showers. Lows in the upper 40s. Southeast Winds around 10 Mph with Gusts to around 25 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Rossmoor Temperature Statistics

January Temperature

Concord, Buchanan Field (8.1 miles)

  • Lowest 1 January, 2026

    48 °F

  • Average January

    55.9 °F

  • Highest 3 January, 2026

    64 °F

Climate (2021–Present)

Concord, Buchanan Field (8.1 miles)

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  • Average Low 2021–2026

    50.9 °F

  • Average 2021–2026

    61.3 °F

  • Average High 2021–2026

    74.2 °F
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