Chacon Reservoir Weather Forecast

    • 52
    • 77

    Slight Chance Rain Showers

    • 38
    • 57

    Mostly Cloudy

    • 45
    • 58

    Mostly Cloudy

    • 56
    • 63

    Mostly Cloudy

    • 58
    • 74

    Mostly Cloudy

    • 54
    • 79

    Partly Sunny

Today 13 Dec Medina

Partly cloudy. Highs in the upper 70s. South Winds around 5 Mph.

Tonight 13 Dec Medina

Partly cloudy in the Evening, then mostly cloudy with a slight chance of Showers after midnight. Lows around 50. Northeast Winds around 5 Mph, increasing to 10 to 15 Mph with Gusts up to 25 Mph after midnight. Chance of rain 20 percent.

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Chacon Reservoir Temperature Statistics

December Temperature

Castroville Municipal Airport (6.8 miles)

  • Lowest 9 December, 2025

    32 °F

  • Average December

    52.2 °F

  • Highest 7 December, 2025

    82.4 °F

Climate (2020–Present)

Castroville Municipal Airport (6.8 miles)

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  • Average Low 2020–2025

    61.3 °F

  • Average 2020–2025

    72 °F

  • Average High 2020–2025

    83.9 °F
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