Sun City Weather Forecast

    • 65
    • 89

    Rain Showers Likely

    • 63
    • 89

    Chance Rain Showers

    • 64
    • 91

    Mostly Sunny

    • 67
    • 95

    Partly Sunny

    • 69
    • 97

    Hot

    • 66
    • 97

    Hot

Today 18 Sep San Bernardino and Riverside County Valleys-The Inland Empire

Showers likely and a slight chance of Thunderstorms. Highs 84 to 90. Areas of Winds east to 10 Mph becoming southwest in the afternoon. Chance of measurable precipitation 70 percent.

Tonight 18 Sep San Bernardino and Riverside County Valleys-The Inland Empire

Partly cloudy with a slight chance of Thunderstorms. A chance of Showers. Lows 61 to 67. Areas of Winds southwest to 10 Mph in the evening becoming light. Chance of measurable precipitation 50 percent.

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Sun City Temperature Statistics

September Temperature

Murrieta/Temecula French Valley (9.9 miles)

  • Lowest 9 September, 2025

    55.4 °F

  • Average September

    75.3 °F

  • Highest 2 September, 2025

    102.2 °F

Climate (2020–Present)

Murrieta/Temecula French Valley (9.9 miles)

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  • Average Low 2020–2025

    50.6 °F

  • Average 2020–2025

    62.8 °F

  • Average High 2020–2025

    77.8 °F
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