Gillespie Field Weather Forecast

    • 48
    • 84

    Mostly Sunny

    • 48
    • 84

    Mostly Sunny

    • 49
    • 85

    Partly Sunny

    • 50
    • 84

    Partly Sunny

    • 49
    • 80

    Partly Sunny

    • 47
    • 78

    Partly Sunny

Today 15 Jan San Diego County Inland Valleys

Mostly sunny. Highs 81 to 84 in the western Valleys to 74 to 79 near the Foothills. Areas of Winds east 15 to 25 Mph. Gusts to 40 Mph. Becoming 35 Mph in the afternoon.

Tonight 15 Jan San Diego County Inland Valleys

Mostly clear. Lows 45 to 52 in wind Sheltered Areas to 49 to 55 in warmer Locations. Areas of Winds east to 10 Mph.

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Gillespie Field Temperature Statistics

January Temperature

Gillespie Field Airport (0 miles)

  • Lowest 10 January, 2026

    35.6 °F

  • Average January

    53.9 °F

  • Highest 11 January, 2026

    75.2 °F

Climate (2021–Present)

Gillespie Field Airport (0 miles)

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  • Average Low 2021–2026

    53.2 °F

  • Average 2021–2026

    60.3 °F

  • Average High 2021–2026

    75.8 °F
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