Rainbow Weather Forecast

    • 60
    • 87

    Partly Sunny

    • 59
    • 84

    Mostly Sunny

    • 60
    • 85

    Sunny

    • 62
    • 87

    Sunny

    • 61
    • 89

    Sunny

    • 61
    • 88

    Mostly Sunny

Today 21 Mar San Diego County Inland Valleys

Partly cloudy. Highs 86 to 91. Light Winds becoming west 10 to 15 Mph with Gusts to 25 Mph this afternoon.

Tonight 21 Mar San Diego County Inland Valleys

Partly cloudy. Lows 50 to 59 in wind Sheltered Areas to 56 to 63 in warmer Locations. Areas of Winds west to 10 Mph in the evening becoming light.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Rainbow Temperature Statistics

March Temperature

Fallbrook Community Airpark (6.8 miles)

  • Lowest 3 March, 2026

    48.2 °F

  • Average March

    64.4 °F

  • Highest 19 March, 2026

    93.2 °F

Climate (2021–Present)

Fallbrook Community Airpark (6.8 miles)

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  • Average Low 2021–2026

    53.6 °F

  • Average 2021–2026

    62 °F

  • Average High 2021–2026

    74.4 °F
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