Crystal Lake Weather Forecast

    • 43
    • 59

    Partly Sunny

    • 40
    • 58

    Mostly Sunny

    • 36
    • 49

    Breezy

    • 37
    • 48

    Partly Sunny

    • 40
    • 54

    Partly Sunny

Today 19 Apr Eastern San Gabriel Mountains

Partly cloudy in the morning then sunny. Highs from the upper 60s and 70s at low Elevations to the mid 50s to around 60 at high Elevations. South Winds 15 to 25 Mph in the afternoon.

Tonight 19 Apr Eastern San Gabriel Mountains

Mostly clear. Lows in the mid 40s to mid 50s except around 40 Colder Valleys and Slopes. South Winds 15 to 25 Mph.

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Crystal Lake Temperature Statistics

April Temperature

Brackett Field Airport (15.5 miles)

  • Lowest 3 April, 2026

    50 °F

  • Average April

    67.5 °F

  • Highest 4 April, 2026

    86 °F

Climate (2021–Present)

Brackett Field Airport (15.5 miles)

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  • Average Low 2021–2026

    55.9 °F

  • Average 2021–2026

    68 °F

  • Average High 2021–2026

    76 °F
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