Average Soil Temperature in Denver, CO for September 2026
Data from Boulder 14 W (42.2 mi away) • 24 of 30 days reported
Monthly Summary by Depth
2" depth
54.4°F
avg
50°F – 58.1°F
24 days
4" depth
54.8°F
avg
50.7°F – 57.9°F
24 days
Daily Readings
| Date | 2" | 4" |
|---|---|---|
| Sep 1 | 56.8°F | 56.8°F |
| Sep 2 | 56.1°F | 56.1°F |
| Sep 3 | 57°F | 57°F |
| Sep 4 | 57°F | 57°F |
| Sep 5 | 57.2°F | 57.2°F |
| Sep 6 | 58.1°F | 57.9°F |
| Sep 7 | 57.2°F | 57.4°F |
| Sep 9 | 55.6°F | 55.9°F |
| Sep 10 | 55.4°F | 55.9°F |
| Sep 11 | 54.9°F | 55.6°F |
| Sep 12 | 55°F | 55.4°F |
| Sep 13 | 56.3°F | 56.5°F |
| Sep 14 | 56.5°F | 56.7°F |
| Sep 15 | 55°F | 55.6°F |
| Sep 16 | 54.7°F | 55°F |
| Sep 17 | 54.3°F | 54.7°F |
| Sep 18 | 53.4°F | 54°F |
| Sep 19 | 51.4°F | 52.2°F |
| Sep 20 | 50.5°F | 51.4°F |
| Sep 21 | 51.1°F | 52°F |
| Sep 22 | 50.7°F | 51.3°F |
| Sep 23 | 51.3°F | 51.8°F |
| Sep 24 | 50.7°F | 51.4°F |
| Sep 25 | 50°F | 50.7°F |