Santee Recreational Lakes Weather Forecast

    • 68
    • 94

    Becoming Sunny

    • 69
    • 95

    Mostly Sunny

    • 71
    • 98

    Hot

    • 76
    • 99

    Hot

    • 74
    • 99

    Hot

    • 69
    • 97

    Hot

    • 67
    • 91

    Mostly Sunny

Today 24 Aug San Diego County Inland Valleys

Mostly sunny this morning. Becoming partly cloudy. Highs 90 to 95 in the western Valleys to 95 to 100 near the Foothills. Areas of Winds west to 10 Mph. Becoming 10 to 15 Mph this afternoon.

Tonight 24 Aug San Diego County Inland Valleys

Mostly clear. Lows 65 to 71. Areas of Winds west to 10 Mph this evening becoming light.

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Santee Recreational Lakes Temperature Statistics

August Temperature

Gillespie Field Airport (1.9 miles)

  • Lowest 3 August, 2026

    66.2 °F

  • Average August

    74.2 °F

  • Highest 22 August, 2026

    96.8 °F

Climate (2021–2026)

Gillespie Field Airport (1.9 miles)

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  • Average Low 2021–2026

    53.5 °F

  • Average 2021–2026

    60.5 °F

  • Average High 2021–2026

    76.3 °F
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