Humble Reservoir Weather Forecast

    • 54
    • 75

    Decreasing Clouds

    • 57
    • 81

    Mostly Sunny

    • 57
    • 78

    Partly Sunny

    • 57
    • 78

    Mostly Sunny

    • 56
    • 77

    Mostly Sunny

    • 55
    • 76

    Mostly Sunny

Today 18 May Orange County Inland

Partly cloudy. Highs 73 to 78. Areas of Winds south 10 to 15 Mph. Gusts to 25 Mph this morning.

Tonight 18 May Orange County Inland

Partly cloudy. Patchy fog overnight. Lows 51 to 57. Areas of Winds southwest 10 Mph in the evening becoming light.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Humble Reservoir Temperature Statistics

May Temperature

Fullerton, Fullerton Municipal Airport (6.8 miles)

  • Lowest 6 May, 2026

    55.7 °F

  • Average May

    67 °F

  • Highest 11 May, 2026

    85.6 °F

Climate (2021–Present)

Fullerton, Fullerton Municipal Airport (6.8 miles)

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  • Average Low 2021–2026

    57 °F

  • Average 2021–2026

    66.4 °F

  • Average High 2021–2026

    76.8 °F
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