Sweetwater Marsh National Wildlife Refuge Weather Forecast

    • 56
    • 74

    Mostly Sunny

    • 55
    • 70

    Partly Sunny

    • 54
    • 68

    Mostly Cloudy

    • 54
    • 68

    Mostly Cloudy

    • 53
    • 67

    Mostly Cloudy

    • 54
    • 67

    Mostly Cloudy

Today 10 Dec San Diego County Coastal Areas

Sunny. Highs 72 to 77 near the coast to 79 to 83 inland. Light Winds becoming west to 10 Mph this afternoon.

Tonight 10 Dec San Diego County Coastal Areas

Mostly clear. Lows 51 to 56. Light Winds.

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  • Temperature Forecast NOAA

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Sweetwater Marsh National Wildlife Refuge Temperature Statistics

December Temperature

Imperial Beach Naval Outlying Field - Ream Field (5 miles)

  • Lowest 5 December, 2025

    46 °F

  • Average December

    57.1 °F

  • Highest 4 December, 2025

    70 °F

Climate (2020–Present)

Imperial Beach Naval Outlying Field - Ream Field (5 miles)

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  • Average Low 2020–2025

    56.6 °F

  • Average 2020–2025

    63.2 °F

  • Average High 2020–2025

    69 °F
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