Average Soil Temperature in Silverthorne, CO — September 2025
Data from Boulder 14 W (40.8 mi away) • 30 of 30 days reported
Monthly Summary by Depth
2" depth
50.6°F
avg
41.9°F – 55.4°F
30 days
4" depth
51.1°F
avg
43.2°F – 55.2°F
30 days
Daily Readings
| Date | 2" | 4" |
|---|---|---|
| Sep 1 | 54.7°F | 54.3°F |
| Sep 2 | 54°F | 54.1°F |
| Sep 3 | 54.7°F | 54.5°F |
| Sep 4 | 55.4°F | 55.2°F |
| Sep 5 | 54.3°F | 54.7°F |
| Sep 6 | 53.4°F | 53.4°F |
| Sep 7 | 54.9°F | 54.9°F |
| Sep 8 | 54.7°F | 54.9°F |
| Sep 9 | 53.4°F | 54°F |
| Sep 10 | 54°F | 54°F |
| Sep 11 | 54.5°F | 54.5°F |
| Sep 12 | 52.3°F | 53.1°F |
| Sep 13 | 48.9°F | 50.4°F |
| Sep 14 | 48.2°F | 49.3°F |
| Sep 15 | 51.1°F | 51.1°F |
| Sep 16 | 50.5°F | 51.3°F |
| Sep 17 | 49.1°F | 49.8°F |
| Sep 18 | 49.5°F | 50°F |
| Sep 19 | 50°F | 50.4°F |
| Sep 20 | 52.7°F | 52.5°F |
| Sep 21 | 52.2°F | 52.5°F |
| Sep 22 | 51.6°F | 52°F |
| Sep 23 | 43.5°F | 45.9°F |
| Sep 24 | 45.1°F | 46°F |
| Sep 25 | 46.2°F | 46.8°F |
| Sep 26 | 47.5°F | 47.8°F |
| Sep 27 | 48.9°F | 48.9°F |
| Sep 28 | 48.2°F | 48.7°F |
| Sep 29 | 41.9°F | 43.7°F |
| Sep 30 | 43.2°F | 43.2°F |