Bonsall Preserve Weather Forecast

    • 66
    • 87

    Patchy Fog

    • 70
    • 90

    Partly Sunny

    • 70
    • 90

    Patchy Fog

    • 70
    • 90

    Patchy Fog

    • 69
    • 89

    Patchy Fog

    • 66
    • 87

    Patchy Fog

Today 20 Aug San Diego County Inland Valleys

Partly cloudy this morning. Becoming mostly sunny. Highs 83 to 88 in the western Valleys to 92 to 97 near the Foothills. Areas of Winds west to 10 Mph. Becoming 10 to 15 Mph this afternoon.

Tonight 20 Aug San Diego County Inland Valleys

Partly cloudy. Lows 65 to 70. Light Winds.

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Bonsall Preserve Temperature Statistics

August Temperature

Fallbrook Community Airpark (4.3 miles)

  • Lowest 2 August, 2025

    57.2 °F

  • Average August

    68.8 °F

  • Highest 7 August, 2025

    96.8 °F

Climate (2020–Present)

Fallbrook Community Airpark (4.3 miles)

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  • Average Low 2020–2025

    53.5 °F

  • Average 2020–2025

    61.8 °F

  • Average High 2020–2025

    74.2 °F
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