Grothaus Lake Weather Forecast
- 36
- 65
Sunny
- 42
- 66
Sunny
- 47
- 75
Mostly Sunny
- 52
- 75
Mostly Sunny
- 48
- 73
Partly Sunny
- 50
- 64
Mostly Cloudy
Today 8 Dec Bexar
Sunny. Highs in the mid 60s. Northeast Winds 5 to 10 Mph.
Tonight 8 Dec Bexar
Clear. Lows in the mid 30s. East Winds around 5 Mph.
Grothaus Lake Temperature Statistics
December Temperature
Castroville Municipal Airport (9.3 miles)
Lowest 3 December, 2025
33.8 °FAverage December
50.8 °FHighest 6 December, 2025
78.8 °F
Climate (2020–Present)
Castroville Municipal Airport (9.3 miles)
Average Low 2020–2025
61.3 °FAverage 2020–2025
72.1 °FAverage High 2020–2025
84 °F