Rainbow Bay Weather Forecast

    • 32
    • 44

    Becoming Sunny

    • 40
    • 50

    Mostly Sunny

    • 43
    • 54

    Partly Sunny

    • 44
    • 57

    Mostly Sunny

    • 41
    • 58

    Partly Sunny

    • 39
    • 51

    Chance Rain

Today 30 Jan San Bernardino County Mountains

Mostly sunny. Not as cool. Highs 48 to 57. Areas of Winds west to 10 Mph in the morning becoming light.

Tonight 30 Jan San Bernardino County Mountains

Mostly clear. Lows 21 to 31 above 6000 feet to 28 to 38 below 6000 feet. Light Winds.

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  • Temperature Real-Time

Rainbow Bay Temperature Statistics

January Temperature

San Bernardino Intl. Airport (11.2 miles)

  • Lowest 19 January, 2025

    32 °F
  • Average January

    51.7 °F
  • Highest 2 January, 2025

    82.4 °F

Climate (2020–Present)

San Bernardino Intl. Airport (11.2 miles)

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  • Average Low 2020–2025

    54.3 °F
  • Average 2020–2025

    63.4 °F
  • Average High 2020–2025

    80.7 °F
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