Heritage Weather Forecast
- 76
- 98
Hot
- 75
- 99
Hot
- 76
- 98
Hot
- 78
- 99
Hot
- 76
- 96
Hot
- 77
- 97
Hot
Today 29 Jul Hays
Partly cloudy this Morning, then clearing. Highs in the upper 90s. South Winds 5 to 10 Mph. Highest heat index Readings up to 106.
Tonight 29 Jul Hays
Clear in the Evening, then becoming partly cloudy. Lows in the mid 70s. South Winds 5 to 10 Mph with Gusts up to 20 Mph.
Heritage Temperature Statistics
July Temperature
San Marcos, San Marcos Municipal Airport (5 miles)
Lowest 10 July, 2026
70 °FAverage July
84 °FHighest 22 July, 2026
102 °F
Climate (2021–2026)
San Marcos, San Marcos Municipal Airport (5 miles)
Average Low 2021–2026
60.1 °FAverage 2021–2026
70.8 °FAverage High 2021–2026
82.4 °F