Viejas Mountain Weather Forecast

    • 52
    • 75

    Increasing Clouds

    • 52
    • 74

    Mostly Sunny

    • 51
    • 73

    Partly Sunny

    • 50
    • 69

    Partly Sunny

    • 49
    • 66

    Partly Sunny

    • 48
    • 64

    Partly Sunny

Today 22 May San Diego County Inland Valleys

Partly cloudy with patchy fog this morning. Becoming sunny. Highs 75 to 79 in the western Valleys to 77 to 82 near the Foothills. Areas of Winds west to 10 Mph. Becoming 10 to 15 Mph with Gusts to 25 Mph this afternoon.

Tonight 22 May San Diego County Inland Valleys

Partly cloudy in the evening. Becoming mostly cloudy overnight with patchy fog. Lows 50 to 55. Areas of Winds west to 10 Mph in the evening becoming light.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Viejas Mountain Temperature Statistics

May Temperature

Gillespie Field Airport (14.3 miles)

  • Lowest 6 May, 2026

    51.8 °F

  • Average May

    62.6 °F

  • Highest 11 May, 2026

    86 °F

Climate (2021–Present)

Gillespie Field Airport (14.3 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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