Lake Mathews Weather Forecast

    • 65
    • 90

    Mostly Sunny

    • 67
    • 91

    Mostly Sunny

    • 70
    • 97

    Hot

    • 70
    • 99

    Hot

    • 69
    • 97

    Hot

    • 68
    • 97

    Hot

Today 21 Jul San Bernardino and Riverside County Valleys-The Inland Empire

Mostly sunny. Highs 90 to 97. Areas of Winds southwest to 10 Mph becoming west with Gusts to 30 Mph this afternoon.

Tonight 21 Jul San Bernardino and Riverside County Valleys-The Inland Empire

Mostly clear. Lows 62 to 67. Areas of Winds west 10 to 15 Mph with Gusts to 25 Mph in the evening becoming light.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake Mathews Temperature Statistics

July Temperature

Riverside Municipal Airport (7.5 miles)

  • Lowest 3 July, 2026

    58.6 °F

  • Average July

    80.1 °F

  • Highest 15 July, 2026

    104.6 °F

Climate (2021–2026)

Riverside Municipal Airport (7.5 miles)

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  • Average Low 2021–2026

    54.9 °F

  • Average 2021–2026

    67.1 °F

  • Average High 2021–2026

    80.3 °F
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