Average Soil Temperature in San Marcos, TX for July 2026
Data from Austin 33 NW (52.1 mi away) • 25 of 31 days reported
Monthly Summary by Depth
2" depth
86°F
avg
77.9°F – 89.8°F
25 days
4" depth
86.3°F
avg
80.1°F – 89.1°F
25 days
Daily Readings
| Date | 2" | 4" |
|---|---|---|
| Jul 1 | 88°F | 87.4°F |
| Jul 2 | 88°F | 87.4°F |
| Jul 3 | 88.7°F | 87.8°F |
| Jul 4 | 88.9°F | 88.3°F |
| Jul 5 | 88.7°F | 88.3°F |
| Jul 6 | 87.3°F | 87.4°F |
| Jul 7 | 88°F | 87.4°F |
| Jul 8 | 89.4°F | 88.5°F |
| Jul 9 | 89.8°F | 89.1°F |
| Jul 10 | 89.2°F | 88.7°F |
| Jul 11 | 86.4°F | 87.6°F |
| Jul 12 | 86.4°F | 86.9°F |
| Jul 13 | 84.6°F | 86.4°F |
| Jul 14 | 81.1°F | 83.8°F |
| Jul 15 | 77.9°F | 80.1°F |
| Jul 16 | 79.7°F | 80.2°F |
| Jul 17 | 82.2°F | 82°F |
| Jul 18 | 83.8°F | 83.5°F |
| Jul 19 | 84.2°F | 84.6°F |
| Jul 20 | 84.4°F | 85.1°F |
| Jul 21 | 84.7°F | 85.5°F |
| Jul 22 | 86.9°F | 86.9°F |
| Jul 23 | 87.8°F | 88°F |
| Jul 24 | 87.1°F | 88°F |
| Jul 25 | 86.9°F | 87.4°F |