Barth Lake Weather Forecast
- 59
- 91
Increasing Clouds
- 55
- 89
Partly Sunny
- 49
- 78
Breezy
- 44
- 78
Sunny
- 53
- 82
Partly Sunny
- 60
- 85
Partly Sunny
Today 13 Mar Caldwell
Sunny. Highs in the lower 90s. Southwest Winds 5 to 10 Mph.
Tonight 13 Mar Caldwell
Partly cloudy this Evening, then becoming mostly cloudy. Lows in the upper 50s. South Winds 10 to 15 Mph.
Barth Lake Temperature Statistics
March Temperature
San Marcos, San Marcos Municipal Airport (10.6 miles)
Lowest 10 March, 2025
37 °FAverage March
63.8 °FHighest 8 March, 2025
86 °F
Climate (2020–Present)
San Marcos, San Marcos Municipal Airport (10.6 miles)
Average Low 2020–2025
59.1 °FAverage 2020–2025
69.7 °FAverage High 2020–2025
81.5 °F