San Joaquin River - Gallagher Slough Weather Forecast

    • 54
    • 58

    Rain

    • 55
    • 58

    Rain

    • 57
    • 60

    Rain

    • 54
    • 57

    Rain

    • 50
    • 55

    Rain

    • 52
    • 54

    Rain

Today 19 Dec Carquinez Strait and Delta

Cloudy. A slight chance of rain Showers in the late morning and early afternoon. Rain Showers likely late in the afternoon. Highs 55 to 61. South Winds 10 to 15 Mph with Gusts to around 25 Mph.

Tonight 19 Dec Carquinez Strait and Delta

Cloudy. Rain Showers in the Evening, then a chance of rain Showers after midnight. Lows around 54. South Winds up to 10 Mph with Gusts to around 20 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

San Joaquin River - Gallagher Slough Temperature Statistics

December Temperature

Concord, Buchanan Field (19.3 miles)

  • Lowest 4 December, 2025

    37.9 °F

  • Average December

    45.2 °F

  • Highest 17 December, 2025

    66 °F

Climate (2020–Present)

Concord, Buchanan Field (19.3 miles)

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  • Average Low 2020–2025

    50.8 °F

  • Average 2020–2025

    61.2 °F

  • Average High 2020–2025

    74.2 °F
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