Imperial Beach Weather Forecast

    • 66
    • 75

    Increasing Clouds

    • 68
    • 75

    Partly Sunny

    • 68
    • 77

    Partly Sunny

    • 70
    • 79

    Mostly Sunny

    • 72
    • 81

    Mostly Sunny

    • 73
    • 84

    Mostly Sunny

    • 75
    • 85

    Mostly Sunny

Today 28 Sep San Diego County Coastal Areas

Mostly sunny. Highs 86 to 91 near the coast to 95 to 98 inland.

Tonight 28 Sep San Diego County Coastal Areas

Mostly clear this evening. Becoming partly cloudy. Patchy fog overnight. Cooler. Lows 58 to 64. Areas of Winds west to 10 Mph this evening becoming light.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Imperial Beach Temperature Statistics

September Temperature

Imperial Beach Naval Outlying Field - Ream Field (1.2 miles)

  • Lowest 3 September, 2026

    57.9 °F

  • Average September

    72.6 °F

  • Highest 9 September, 2026

    89.1 °F

Climate (2021–2026)

Imperial Beach Naval Outlying Field - Ream Field (1.2 miles)

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  • Average Low 2021–2026

    56.5 °F

  • Average 2021–2026

    63.2 °F

  • Average High 2021–2026

    69.5 °F
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