Lyall-Roberts Airport Weather Forecast

    • 69
    • 102

    Hot

    • 65
    • 98

    Hot

    • 61
    • 93

    Mostly Sunny

    • 60
    • 91

    Mostly Sunny

    • 57
    • 91

    Mostly Sunny

    • 57
    • 88

    Mostly Sunny

    • 59
    • 89

    Mostly Sunny

Today 10 Sep San Diego County Inland Valleys

Mostly sunny. Highs 96 to 101. Areas of Winds south to 10 Mph becoming west this afternoon.

Tonight 10 Sep San Diego County Inland Valleys

Mostly clear. Lows 68 to 73. Light Winds.

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  • Temperature Real-Time

Lyall-Roberts Airport Temperature Statistics

September Temperature

Fallbrook Community Airpark (14.9 miles)

  • Lowest 3 September, 2026

    57.2 °F

  • Average September

    74.8 °F

  • Highest 8 September, 2026

    104 °F

Climate (2021–2026)

Fallbrook Community Airpark (14.9 miles)

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  • Average Low 2021–2026

    53.9 °F

  • Average 2021–2026

    62.2 °F

  • Average High 2021–2026

    74.5 °F
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