Grand Terrace Weather Forecast

    • 57
    • 82

    Becoming Sunny

    • 57
    • 81

    Patchy Fog

    • 58
    • 80

    Patchy Fog

    • 60
    • 83

    Patchy Fog

    • 64
    • 88

    Patchy Fog

    • 64
    • 92

    Patchy Fog

    • 63
    • 90

    Patchy Fog

Today 31 May San Bernardino and Riverside County Valleys-The Inland Empire

Partly cloudy with patchy fog this morning. Becoming mostly sunny. Highs 80 to 88. Light Winds becoming west 10 to 15 Mph this afternoon.

Tonight 31 May San Bernardino and Riverside County Valleys-The Inland Empire

Mostly clear this evening. Becoming partly cloudy. Patchy fog overnight. Lows 49 to 56. Areas of Winds west to 10 Mph this evening becoming light.

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Grand Terrace Temperature Statistics

May Temperature

San Bernardino Intl. Airport (5 miles)

  • Lowest 6 May, 2024

    45 °F

  • Average May

    61.2 °F

  • Highest 9 May, 2024

    84.2 °F

Climate (2019–Present)

San Bernardino Intl. Airport (5 miles)

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  • Average Low 2019–2024

    54.4 °F

  • Average 2019–2024

    63.4 °F

  • Average High 2019–2024

    80.8 °F
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