Sweetwater Marsh National Wildlife Refuge Weather Forecast

    • 70
    • 76

    Increasing Clouds

    • 70
    • 76

    Partly Sunny

    • 70
    • 76

    Mostly Cloudy

    • 69
    • 75

    Mostly Cloudy

    • 69
    • 76

    Mostly Cloudy

    • 69
    • 75

    Partly Sunny

    • 68
    • 74

    Mostly Cloudy

Today 7 Aug San Diego County Coastal Areas

Partly cloudy with patchy fog this morning. Becoming mostly sunny. Highs 76 to 81 near the coast to 82 to 86 inland. Areas of Winds west to 10 Mph.

Tonight 7 Aug San Diego County Coastal Areas

Partly cloudy. Patchy fog overnight. Lows 64 to 69. Areas of Winds west 10 Mph this evening becoming light.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Sweetwater Marsh National Wildlife Refuge Temperature Statistics

August Temperature

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

  • Lowest 1 August, 2026

    63 °F

  • Average August

    71.7 °F

  • Highest 2 August, 2026

    78.1 °F

Climate (2021–2026)

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

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  • Average Low 2021–2026

    56.4 °F

  • Average 2021–2026

    63.1 °F

  • Average High 2021–2026

    69.3 °F
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