Simi Valley Weather Forecast

    • 40
    • 59

    Mostly Sunny

    • 40
    • 64

    Mostly Sunny

    • 38
    • 64

    Mostly Sunny

    • 45
    • 66

    Breezy

    • 45
    • 64

    Partly Sunny

    • 48
    • 69

    Mostly Sunny

    • 47
    • 69

    Mostly Sunny

Today 17 Jan Southeastern Ventura County Valleys

Sunny except for patchy low Clouds and fog in the morning. Areas of frost in the morning. Highs in the mid 50s to around 60.

Tonight 17 Jan Southeastern Ventura County Valleys

Mostly clear. Patchy frost after midnight. Lows in the 30s to lower 40s.

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Simi Valley Temperature Statistics

January Temperature

Van Nuys, Van Nuys Airport (14.9 miles)

  • Lowest 1 January, 2025

    40.6 °F

  • Average January

    60.4 °F

  • Highest 2 January, 2025

    80.7 °F

Climate (2020–Present)

Van Nuys, Van Nuys Airport (14.9 miles)

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  • Average Low 2020–2025

    56.9 °F

  • Average 2020–2025

    67.7 °F

  • Average High 2020–2025

    79.7 °F
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