Grothaus Lake Weather Forecast

    • 72
    • 91

    Mostly Cloudy

    • 73
    • 95

    Partly Sunny

    • 70
    • 96

    Mostly Cloudy

    • 69
    • 95

    Slight Chance Thunderstorms

    • 68
    • 86

    Chance Thunderstorms

    • 58
    • 84

    Chance Thunderstorms

Today 26 Apr Bexar

Cloudy this Morning, then becoming partly cloudy. Patchy fog this morning. Highs in the lower 90s. Southeast Winds 5 to 10 Mph.

Tonight 26 Apr Bexar

Partly cloudy in the Evening, then becoming mostly cloudy. Lows in the lower 70s. Southeast Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Grothaus Lake Temperature Statistics

April Temperature

Castroville Municipal Airport (9.3 miles)

  • Lowest 6 April, 2026

    48.2 °F

  • Average April

    70.9 °F

  • Highest 1 April, 2026

    91.4 °F

Climate (2021–Present)

Castroville Municipal Airport (9.3 miles)

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  • Average Low 2021–2026

    61.6 °F

  • Average 2021–2026

    72.4 °F

  • Average High 2021–2026

    84.3 °F
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