Bonsall Weather Forecast

    • 65
    • 86

    Increasing Clouds

    • 66
    • 86

    Partly Sunny

    • 67
    • 87

    Patchy Fog

    • 67
    • 88

    Mostly Sunny

    • 68
    • 89

    Partly Sunny

    • 68
    • 89

    Partly Sunny

Today 17 Aug San Diego County Inland Valleys

Partly cloudy this morning. Becoming mostly sunny. Highs 84 to 88 in the western Valleys to 90 to 95 near the Foothills. Areas of Winds west to 10 Mph. Becoming 10 to 15 Mph this afternoon.

Tonight 17 Aug San Diego County Inland Valleys

Mostly clear in the evening. Becoming partly cloudy. Lows 63 to 68. Areas of Winds northwest to 10 Mph in the evening becoming light.

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Bonsall Temperature Statistics

August Temperature

Fallbrook Community Airpark (4.3 miles)

  • Lowest 5 August, 2026

    62.6 °F

  • Average August

    73.3 °F

  • Highest 2 August, 2026

    93.2 °F

Climate (2021–2026)

Fallbrook Community Airpark (4.3 miles)

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  • Average Low 2021–2026

    53.8 °F

  • Average 2021–2026

    62.1 °F

  • Average High 2021–2026

    74.5 °F
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