Lake Arrowhead Weather Forecast

    • 47
    • 71

    Partly Sunny

    • 42
    • 61

    Chance Rain Showers

    • 42
    • 63

    Mostly Sunny

    • 45
    • 65

    Mostly Sunny

    • 46
    • 69

    Mostly Sunny

    • 46
    • 72

    Mostly Sunny

    • 51
    • 71

    Mostly Sunny

Today 20 Sep San Bernardino County Mountains

Mostly clear in the evening. Becoming partly cloudy. Colder. Lows 36 to 46 above 6000 feet to 42 to 51 below 6000 feet. Areas of Winds west 15 to 25 Mph. Gusts to 30 Mph. Becoming 35 Mph overnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake Arrowhead Temperature Statistics

September Temperature

Riverside / March Air Force Base (24.9 miles)

  • Lowest 18 September, 2017

    51.8 °F
  • Average September

    75 °F
  • Highest 1 September, 2017

    108.5 °F

Climate (2010–Present)

Riverside / March Air Force Base (24.9 miles)

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  • Average Low 2010–Present

    52.9 °F
  • Average 2010–Present

    66.2 °F
  • Average High 2010–Present

    79.7 °F
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