Montclair Weather Forecast

    • 71
    • 100

    Hot

    • 71
    • 101

    Hot

    • 71
    • 101

    Hot

    • 73
    • 100

    Hot

    • 71
    • 99

    Hot

    • 71
    • 99

    Hot

Today 22 Aug San Bernardino and Riverside County Valleys-The Inland Empire

Sunny. Highs 99 to 105. Areas of Winds west to 10 Mph. Becoming 10 to 15 Mph with Gusts to 25 Mph in the afternoon.

Tonight 22 Aug San Bernardino and Riverside County Valleys-The Inland Empire

Clear. Lows 68 to 72. Areas of Winds west 10 to 15 Mph in the evening becoming light.

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Montclair Temperature Statistics

August Temperature

Brackett Field Airport (5 miles)

  • Lowest 4 August, 2026

    64.4 °F

  • Average August

    81.5 °F

  • Highest 8 August, 2026

    98.6 °F

Climate (2021–2026)

Brackett Field Airport (5 miles)

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  • Average Low 2021–2026

    56 °F

  • Average 2021–2026

    68 °F

  • Average High 2021–2026

    76 °F
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