Jamul Weather Forecast

    • 52
    • 78

    Sunny

    • 55
    • 80

    Sunny

    • 53
    • 81

    Mostly Sunny

    • 52
    • 76

    Partly Sunny

    • 51
    • 72

    Partly Sunny

    • 53
    • 74

    Mostly Sunny

    • 54
    • 78

    Mostly Sunny

Today 29 Jan San Diego County Inland Valleys

Mostly sunny. Warmer. Highs 79 to 82 in the western Valleys to 73 to 78 near the Foothills. Areas of Winds east 10 to 15 Mph with Gusts to 30 Mph.

Tonight 29 Jan San Diego County Inland Valleys

Clear. Lows 43 to 53 in wind Sheltered Areas to 49 to 56 in warmer Locations. Areas of Winds east 10 to 15 Mph. Gusts to 30 Mph. Becoming 25 Mph overnight.

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Jamul Temperature Statistics

January Temperature

Gillespie Field Airport (9.3 miles)

  • Lowest 10 January, 2026

    35.6 °F

  • Average January

    53.1 °F

  • Highest 14 January, 2026

    82.4 °F

Climate (2021–Present)

Gillespie Field Airport (9.3 miles)

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  • Average Low 2021–2026

    53.2 °F

  • Average 2021–2026

    60.2 °F

  • Average High 2021–2026

    75.8 °F
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