Santee Weather Forecast

    • 55
    • 74

    Decreasing Clouds

    • 54
    • 73

    Mostly Cloudy

    • 54
    • 77

    Partly Sunny

    • 54
    • 81

    Partly Sunny

    • 55
    • 82

    Mostly Sunny

    • 55
    • 82

    Mostly Sunny

Today 16 May San Diego County Inland Valleys

Mostly cloudy this morning. Becoming partly cloudy. Patchy fog this morning. Highs 70 to 75. Areas of Winds southwest to 10 Mph. Becoming 10 to 15 Mph with Gusts to 25 Mph this afternoon.

Tonight 16 May San Diego County Inland Valleys

Mostly cloudy in the evening. Becoming partly cloudy. Patchy fog. Lows 49 to 55. Areas of Winds south 10 Mph.

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Santee Temperature Statistics

May Temperature

Gillespie Field Airport (0.6 miles)

  • Lowest 6 May, 2026

    51.8 °F

  • Average May

    62.4 °F

  • Highest 11 May, 2026

    86 °F

Climate (2021–Present)

Gillespie Field Airport (0.6 miles)

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  • Average Low 2021–2026

    53.4 °F

  • Average 2021–2026

    60.5 °F

  • Average High 2021–2026

    76.2 °F
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