Grant Rea Park Weather Forecast

    • 49
    • 69

    Mostly Cloudy

    • 52
    • 67

    Chance Rain

    • 51
    • 66

    Slight Chance Rain

    • 46
    • 70

    Mostly Sunny

    • 47
    • 70

    Patchy Fog

    • 47
    • 72

    Patchy Fog

Today 21 Jan Los Angeles County San Gabriel Valley

Mostly cloudy. Patchy morning fog. Fog locally dense with visibility one quarter mile or less. Highs around 70.

Tonight 21 Jan Los Angeles County San Gabriel Valley

Cloudy. Lows in the upper 40s to mid 50s.

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Grant Rea Park Temperature Statistics

January Temperature

El Monte (5.6 miles)

  • Lowest 10 January, 2026

    39.2 °F

  • Average January

    67.1 °F

  • Highest 14 January, 2026

    84.2 °F

Climate (2021–Present)

El Monte (5.6 miles)

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  • Average Low 2021–2026

    59.4 °F

  • Average 2021–2026

    70.2 °F

  • Average High 2021–2026

    76.9 °F
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