Crestline Weather Forecast

    • 42
    • 52

    Increasing Clouds

    • 40
    • 54

    Becoming Sunny

    • 44
    • 55

    Sunny

    • 44
    • 58

    Mostly Sunny

    • 45
    • 58

    Partly Sunny

    • 43
    • 57

    Partly Sunny

    • 40
    • 54

    Mostly Sunny

Today 27 Jan San Bernardino County Mountains

Mostly sunny. Not as cool. Highs 46 to 54 above 6000 feet to 52 to 61 below 6000 feet. Areas of Winds east to 10 Mph becoming southwest 10 Mph this afternoon. N.

Tonight 27 Jan San Bernardino County Mountains

Partly cloudy. Lows 27 to 37 above 6000 feet to 37 to 44 below 6000 feet. Light Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Crestline Temperature Statistics

January Temperature

San Bernardino Intl. Airport (10.6 miles)

  • Lowest 10 January, 2026

    37.2 °F

  • Average January

    55.3 °F

  • Highest 14 January, 2026

    82.4 °F

Climate (2021–Present)

San Bernardino Intl. Airport (10.6 miles)

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  • Average Low 2021–2026

    54.1 °F

  • Average 2021–2026

    63.1 °F

  • Average High 2021–2026

    80.3 °F
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