Pacheco State Park Weather Forecast

    • 53
    • 57

    Rain Likely

    • 50
    • 55

    Rain Likely

    • 50
    • 56

    Rain Showers

    • 49
    • 52

    Rain

    • 47
    • 51

    Rain

    • 45
    • 48

    Rain

Today 21 Dec West Side Mountains north of 198

Cloudy. Slight chance of rain in the Morning, then chance of rain in the afternoon. Highs 58 to 64. South Winds 5 to 10 Mph. Chance of rain 50 percent.

Tonight 21 Dec West Side Mountains north of 198

Cloudy. Chance of rain Showers and slight chance of Thunderstorms in the Evening, then chance of rain after midnight. Near steady temperature in the mid 50s. Southwest Winds up to 10 Mph. Chance of precipitation 50 percent.

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Pacheco State Park Temperature Statistics

December Temperature

Hollister, CA (15.5 miles)

  • Lowest 4 December, 2025

    33.8 °F

  • Average December

    48.2 °F

  • Highest 17 December, 2025

    71.6 °F

Climate (2020–Present)

Hollister, CA (15.5 miles)

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  • Average Low 2020–2025

    46.3 °F

  • Average 2020–2025

    57.6 °F

  • Average High 2020–2025

    72.4 °F
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