Bonsall Weather Forecast

    • 63
    • 84

    Mostly Sunny

    • 67
    • 88

    Increasing Clouds

    • 67
    • 90

    Partly Sunny

    • 65
    • 88

    Patchy Fog

    • 65
    • 84

    Patchy Fog

    • 64
    • 84

    Partly Sunny

    • 64
    • 84

    Patchy Fog

Today 5 Aug San Diego County Inland Valleys

Partly cloudy this morning. Becoming sunny. Hazy. Highs 83 to 88 in the western Valleys to 89 to 94 near the Foothills. Light Winds becoming west 10 Mph this afternoon.

Tonight 5 Aug San Diego County Inland Valleys

Mostly clear. Hazy. Lows 62 to 66. Areas of Winds west to 10 Mph this evening becoming light.

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Bonsall Temperature Statistics

August Temperature

Fallbrook Community Airpark (4.3 miles)

  • Lowest 2 August, 2025

    57.2 °F

  • Average August

    66.9 °F

  • Highest 2 August, 2025

    84.2 °F

Climate (2020–Present)

Fallbrook Community Airpark (4.3 miles)

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  • Average Low 2020–2025

    53.5 °F

  • Average 2020–2025

    61.9 °F

  • Average High 2020–2025

    74.2 °F
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