Castroville Weather Forecast

    • 75
    • 100

    Slight Chance Thunderstorms

    • 75
    • 100

    Hot

    • 74
    • 100

    Hot

    • 75
    • 99

    Hot

    • 73
    • 95

    Slight Chance Thunderstorms

    • 71
    • 96

    Mostly Sunny

    • 72
    • 97

    Hot

Today 13 Sep Medina

Mostly sunny. Highs in the upper 90s. Southeast Winds 10 to 15 Mph.

Tonight 13 Sep Medina

Mostly clear with a slight chance of Showers this Evening, then partly cloudy after midnight. Lows in the mid 70s. Southeast Winds 10 to 15 Mph. Chance of rain 20 percent.

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Castroville Temperature Statistics

September Temperature

Castroville Municipal Airport (1.9 miles)

  • Lowest 2 September, 2026

    73.4 °F

  • Average September

    87.9 °F

  • Highest 2 September, 2026

    102.2 °F

Climate (2021–2026)

Castroville Municipal Airport (1.9 miles)

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  • Average Low 2021–2026

    61.7 °F

  • Average 2021–2026

    72.6 °F

  • Average High 2021–2026

    84.6 °F
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