Winchester Weather Forecast

    • 46
    • 81

    Sunny

    • 48
    • 82

    Mostly Sunny

    • 48
    • 80

    Mostly Sunny

    • 50
    • 84

    Mostly Sunny

    • 48
    • 82

    Mostly Sunny

    • 47
    • 76

    Partly Sunny

    • 47
    • 75

    Partly Sunny

Today 15 Dec San Bernardino and Riverside County Valleys-The Inland Empire

Patchy dense fog this morning. Mostly sunny. Local visibility one quarter mile or less at Times this morning. Highs 77 to 82. Areas of Winds north to 10 Mph becoming northwest with Gusts to 25 Mph this afternoon.

Tonight 15 Dec San Bernardino and Riverside County Valleys-The Inland Empire

Mostly clear. Lows 44 to 48 in wind Sheltered Areas to 49 to 58 in warmer Locations. Areas of Winds north to 10 Mph.

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Winchester Temperature Statistics

December Temperature

Murrieta/Temecula French Valley (9.3 miles)

  • Lowest 2 December, 2025

    35.6 °F

  • Average December

    56.7 °F

  • Highest 10 December, 2025

    87.8 °F

Climate (2020–Present)

Murrieta/Temecula French Valley (9.3 miles)

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  • Average Low 2020–2025

    50.7 °F

  • Average 2020–2025

    62.7 °F

  • Average High 2020–2025

    77.8 °F
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