Mission Valley Weather Forecast

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    Rain

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    Rain

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    Rain Showers

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    Rain

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    Rain

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    Rain

Today 21 Dec San Francisco Bay Shoreline

Breezy, rain. Highs in the lower 60s. South Winds 10 to 20 Mph increasing to 20 to 30 Mph in the afternoon.

Tonight 21 Dec San Francisco Bay Shoreline

Breezy. Showers and a slight chance of Thunderstorms in the Evening, then rain after midnight. Patchy fog after midnight. Lows in the mid 50s. South Winds 20 to 30 Mph decreasing to 10 to 20 Mph after midnight.

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Mission Valley Temperature Statistics

December Temperature

Palo Alto Airport (11.2 miles)

  • Lowest 13 December, 2025

    33.8 °F

  • Average December

    50.2 °F

  • Highest 17 December, 2025

    66.2 °F

Climate (2020–Present)

Palo Alto Airport (11.2 miles)

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  • Average Low 2020–2025

    50.7 °F

  • Average 2020–2025

    60.3 °F

  • Average High 2020–2025

    67.1 °F
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