Lake Arrowhead Weather Forecast

    • 30
    • 44

    Mostly Sunny

    • 38
    • 47

    Rain Showers

    • 33
    • 50

    Chance Rain Showers

    • 19
    • 42

    Wintry Mix Likely

    • 14
    • 28

    Wintry Mix Likely

    • 10
    • 30

    Slight Chance Freezing Rain

Today 20 Jan Union

Sunny. Highs in the mid 40s. Southeast Winds around 5 Mph.

Tonight 20 Jan Union

Mostly clear. Lows in the upper 20s. South Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake Arrowhead Temperature Statistics

January Temperature

Oxford, University-Oxford Airport (24.2 miles)

  • Lowest 18 January, 2026

    19.4 °F

  • Average January

    45.3 °F

  • Highest 9 January, 2026

    73.4 °F

Climate (2021–Present)

Oxford, University-Oxford Airport (24.2 miles)

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  • Average Low 2021–2026

    52 °F

  • Average 2021–2026

    62 °F

  • Average High 2021–2026

    73.2 °F
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