Average Soil Temperature in Johns Island, SC for September 2026
Data from McClellanville 7 NE (49.9 mi away) • 25 of 30 days reported
Monthly Summary by Depth
2" depth
82.2°F
avg
74.3°F – 85.6°F
25 days
20" depth
81.7°F
avg
77.2°F – 83.7°F
25 days
40" depth
81.2°F
avg
79°F – 82.2°F
25 days
Daily Readings
| Date | 2" | 20" | 40" |
|---|---|---|---|
| Sep 1 | 83.5°F | 81.9°F | 81.3°F |
| Sep 2 | 84°F | 82.6°F | 81.5°F |
| Sep 3 | 84.6°F | 82.8°F | 81.7°F |
| Sep 4 | 84.9°F | 83.1°F | 81.9°F |
| Sep 5 | 85.6°F | 83.3°F | 82°F |
| Sep 6 | 85.6°F | 83.7°F | 82.2°F |
| Sep 7 | 83.8°F | 83.3°F | 82.2°F |
| Sep 8 | 83.5°F | 82.8°F | 82°F |
| Sep 9 | 82.6°F | 82.4°F | 81.9°F |
| Sep 10 | 82.6°F | 82.2°F | 81.7°F |
| Sep 11 | 81.3°F | 82°F | 81.5°F |
| Sep 12 | 82°F | 81.1°F | 81.1°F |
| Sep 13 | 83.8°F | 82°F | 81.1°F |
| Sep 14 | 84.2°F | 82.6°F | 81.5°F |
| Sep 15 | 83.5°F | 82.8°F | 81.7°F |
| Sep 16 | 81.1°F | 81.9°F | 81.7°F |
| Sep 17 | 80.1°F | 81°F | 81.1°F |
| Sep 18 | 80.4°F | 80.6°F | 80.8°F |
| Sep 19 | 81.9°F | 80.8°F | 80.6°F |
| Sep 20 | 82°F | 81.1°F | 80.6°F |
| Sep 21 | 82°F | 81.1°F | 80.6°F |
| Sep 22 | 81.7°F | 81.3°F | 80.8°F |
| Sep 23 | 79.5°F | 80.4°F | 80.6°F |
| Sep 24 | 76.5°F | 79°F | 80.1°F |
| Sep 25 | 74.3°F | 77.2°F | 79°F |