San Bernardino Weather Forecast

    • 53
    • 67

    Slight Chance Rain

    • 54
    • 70

    Partly Sunny

    • 55
    • 76

    Mostly Sunny

    • 57
    • 83

    Sunny

    • 59
    • 87

    Sunny

    • 61
    • 92

    Mostly Sunny

Today 27 May San Bernardino and Riverside County Valleys-The Inland Empire

Patchy fog this morning. Cloudy with a slight chance of rain this Morning, then partly cloudy this afternoon. Highs 62 to 68. Areas of Winds south 10 to 15 Mph. Gusts to 25 Mph. Becoming 30 Mph this afternoon. Chance of measurable precipitation 20 percent.

Tonight 27 May San Bernardino and Riverside County Valleys-The Inland Empire

Partly cloudy in the Evening, then mostly cloudy with a slight chance of rain overnight. Patchy fog overnight. Lows 43 to 52. Areas of Winds southwest 10 to 15 Mph with Gusts to 25 Mph. Becoming to 10 Mph overnight. Chance of measurable precipitation 20 percent.

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San Bernardino Temperature Statistics

May Temperature

San Bernardino Intl. Airport (2.5 miles)

  • Lowest 6 May, 2026

    49.1 °F

  • Average May

    64.3 °F

  • Highest 11 May, 2026

    98.6 °F

Climate (2021–Present)

San Bernardino Intl. Airport (2.5 miles)

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  • Average Low 2021–2026

    54.3 °F

  • Average 2021–2026

    63.3 °F

  • Average High 2021–2026

    80.5 °F
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