Rancho Santa Ana Botanic Garden Weather Forecast

    • 66
    • 88

    Mostly Sunny

    • 70
    • 93

    Mostly Sunny

    • 71
    • 97

    Hot

    • 73
    • 99

    Hot

    • 73
    • 98

    Hot

    • 71
    • 96

    Sunny

Today 30 Sep Los Angeles County San Gabriel Valley

Sunny except for patchy low Clouds and fog in the morning. Highs in the mid 80s to around 90.

Tonight 30 Sep Los Angeles County San Gabriel Valley

Mostly clear except for patchy low Clouds and fog after midnight. Lows in the upper 50s to mid 60s.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Rancho Santa Ana Botanic Garden Temperature Statistics

September Temperature

Brackett Field Airport (3.7 miles)

  • Lowest 2 September, 2026

    60.8 °F

  • Average September

    78 °F

  • Highest 9 September, 2026

    105.8 °F

Climate (2021–2026)

Brackett Field Airport (3.7 miles)

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  • Average Low 2021–2026

    56.1 °F

  • Average 2021–2026

    68.1 °F

  • Average High 2021–2026

    76 °F
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