Santee Recreational Lakes Weather Forecast

    • 49
    • 76

    Mostly Sunny

    • 53
    • 84

    Mostly Sunny

    • 50
    • 79

    Partly Sunny

    • 51
    • 74

    Partly Sunny

    • 50
    • 76

    Patchy Fog

    • 50
    • 74

    Mostly Cloudy

    • 52
    • 71

    Chance Rain Showers

Today 17 Dec San Diego County Inland Valleys

Partly cloudy this morning. Becoming mostly sunny. Areas of fog this morning. Local visibility one quarter mile or less at Times this morning. Highs 72 to 76 in the western Valleys to 74 to 79 near the Foothills. Light Winds becoming west 10 Mph this afternoon.

Tonight 17 Dec San Diego County Inland Valleys

Mostly clear. Lows 45 to 53 in wind Sheltered Areas to 50 to 58 in warmer Locations. Light Winds becoming east to 10 Mph overnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Santee Recreational Lakes Temperature Statistics

December Temperature

Gillespie Field Airport (1.9 miles)

  • Lowest 5 December, 2025

    39.2 °F

  • Average December

    53.9 °F

  • Highest 10 December, 2025

    86 °F

Climate (2020–Present)

Gillespie Field Airport (1.9 miles)

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  • Average Low 2020–2025

    53.1 °F

  • Average 2020–2025

    60.2 °F

  • Average High 2020–2025

    75.8 °F
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