Bluebonnet Lake Weather Forecast
- 76
- 100
Hot
- 76
- 99
Hot
- 75
- 99
Hot
- 76
- 97
Hot
- 76
- 96
Partly Sunny
- 76
- 96
Partly Sunny
Today 4 Aug Caldwell
Mostly sunny. Hot with Highs around 100. South Winds 5 to 10 Mph. Highest heat index Readings up to 106.
Tonight 4 Aug Caldwell
Clear in the Evening, then becoming partly cloudy. Lows in the mid 70s. South Winds 5 to 10 Mph.
Bluebonnet Lake Temperature Statistics
August Temperature
San Marcos, San Marcos Municipal Airport (4.3 miles)
Lowest 1 August, 2026
75.9 °FAverage August
83.9 °FHighest 1 August, 2026
99 °F
Climate (2021–2026)
San Marcos, San Marcos Municipal Airport (4.3 miles)
Average Low 2021–2026
60.1 °FAverage 2021–2026
70.8 °FAverage High 2021–2026
82.4 °F