South San Ysidro Weather Forecast

    • 31
    • 57

    Partly Sunny

    • 37
    • 59

    Breezy

    • 30
    • 61

    Partly Sunny

    • 35
    • 59

    Sunny

    • 35
    • 62

    Mostly Sunny

    • 34
    • 62

    Partly Sunny

Today 18 Dec Glorieta Mesa Including Glorieta Pass

Windy. Partly cloudy. Highs in the lower 50s. Northwest Winds 25 to 35 Mph with Gusts up to 50 Mph, becoming west 15 to 20 Mph in the afternoon.

Tonight 18 Dec Glorieta Mesa Including Glorieta Pass

Breezy, cold. Partly cloudy. Lows in the lower 30s. West Winds 15 to 25 Mph.

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South San Ysidro Temperature Statistics

December Temperature

Las Vegas Municipal Airport (28.6 miles)

  • Lowest 4 December, 2025

    15.1 °F

  • Average December

    39.4 °F

  • Highest 11 December, 2025

    72 °F

Climate (2020–Present)

Las Vegas Municipal Airport (28.6 miles)

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  • Average Low 2020–2025

    37.7 °F

  • Average 2020–2025

    51.5 °F

  • Average High 2020–2025

    65.7 °F
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