Carter Lake Weather Forecast
- 69
- 85
Increasing Clouds
- 70
- 86
Slight Chance Thunderstorms
- 70
- 91
Mostly Cloudy
- 72
- 92
Mostly Cloudy
- 70
- 93
Slight Chance Thunderstorms
- 69
- 94
Slight Chance Thunderstorms
Today 23 Apr Guadalupe
Mostly cloudy. Highs in the mid 80s. South Winds 10 to 15 Mph.
Tonight 23 Apr Guadalupe
Partly cloudy in the Evening, then becoming cloudy. Lows in the upper 60s. South Winds 10 to 15 Mph.
Carter Lake Temperature Statistics
April Temperature
San Marcos, San Marcos Municipal Airport (18 miles)
Lowest 7 April, 2026
48 °FAverage April
70.2 °FHighest 1 April, 2026
89.1 °F
Climate (2021–Present)
San Marcos, San Marcos Municipal Airport (18 miles)
Average Low 2021–2026
60 °FAverage 2021–2026
70.7 °FAverage High 2021–2026
82.3 °F