Lake Arrowhead Weather Forecast

    • 41
    • 55

    Chance Rain Showers

    • 40
    • 52

    Partly Sunny

    • 40
    • 54

    Partly Sunny

    • 44
    • 57

    Mostly Sunny

    • 47
    • 63

    Mostly Sunny

    • 50
    • 67

    Mostly Sunny

Today 31 Mar San Bernardino County Mountains

Mostly cloudy. A slight chance of Showers this afternoon. Highs 51 to 61 above 6000 feet to 58 to 68 below 6000 feet. Snow level above 8000 feet. Areas of Winds southwest 10 to 15 Mph with Gusts to 30 Mph. Becoming 15 to 25 Mph with Gusts to 40 Mph this afternoon. Chance of measurable precipitation 20 percent.

Tonight 31 Mar San Bernardino County Mountains

Mostly cloudy with a chance of Showers in the Evening, then partly cloudy overnight. Much Colder. Lows 27 to 37 above 6000 feet to 37 to 47 below 6000 feet. Snow level above 8000 feet. Areas of Winds west 20 to 30 Mph with Gusts to 50 Mph. Chance of measurable precipitation 50 percent.

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Lake Arrowhead Temperature Statistics

March Temperature

San Bernardino Intl. Airport (11.8 miles)

  • Lowest 6 March, 2026

    44.1 °F

  • Average March

    66.8 °F

  • Highest 19 March, 2026

    102.2 °F

Climate (2021–Present)

San Bernardino Intl. Airport (11.8 miles)

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  • Average Low 2021–2026

    54.3 °F

  • Average 2021–2026

    63.3 °F

  • Average High 2021–2026

    80.6 °F
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