Jamul Weather Forecast

    • 51
    • 66

    Cloudy

    • 51
    • 63

    Slight Chance Rain Showers

    • 51
    • 66

    Partly Sunny

    • 51
    • 68

    Mostly Sunny

    • 54
    • 72

    Mostly Sunny

    • 56
    • 78

    Sunny

Today 26 May San Diego County Inland Valleys

Mostly cloudy with patchy fog and drizzle in the Morning, then partly cloudy in the afternoon. Highs 65 to 70. Areas of Winds west to 10 Mph. Becoming 10 to 15 Mph with Gusts to 25 Mph in the afternoon.

Tonight 26 May San Diego County Inland Valleys

Partly cloudy in the Evening, then mostly cloudy with patchy fog and drizzle overnight. Lows 49 to 55 in wind Sheltered Areas to 45 to 54 in warmer Locations. Areas of Winds southwest 10 to 15 Mph. Gusts to 25 Mph in the evening.

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Jamul Temperature Statistics

May Temperature

Gillespie Field Airport (9.3 miles)

  • Lowest 6 May, 2026

    51.8 °F

  • Average May

    62.8 °F

  • Highest 11 May, 2026

    86 °F

Climate (2021–Present)

Gillespie Field Airport (9.3 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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