Average Soil Temperature in Sun Valley, ID for September 2026
Data from Arco 17 SW (41.6 mi away) • 25 of 30 days reported
Monthly Summary by Depth
2" depth
65.2°F
avg
59.2°F – 72.3°F
25 days
4" depth
65.5°F
avg
60.1°F – 72.1°F
25 days
Daily Readings
| Date | 2" | 4" |
|---|---|---|
| Sep 1 | 72.3°F | 72.1°F |
| Sep 2 | 66.9°F | 67.6°F |
| Sep 3 | 67.5°F | 67.5°F |
| Sep 4 | 68.5°F | 68.5°F |
| Sep 5 | 70.2°F | 69.8°F |
| Sep 6 | 70.9°F | 70.7°F |
| Sep 7 | 66.6°F | 67.8°F |
| Sep 8 | 64.8°F | 65.7°F |
| Sep 9 | 65.5°F | 65.8°F |
| Sep 10 | 65.8°F | 66.4°F |
| Sep 11 | 68°F | 67.8°F |
| Sep 12 | 66.4°F | 66.4°F |
| Sep 13 | 65.8°F | 66°F |
| Sep 14 | 63.1°F | 63.9°F |
| Sep 15 | 63.3°F | 63.5°F |
| Sep 16 | 66°F | 65.3°F |
| Sep 17 | 65.7°F | 65.7°F |
| Sep 18 | 62.4°F | 63°F |
| Sep 19 | 59.5°F | 60.6°F |
| Sep 20 | 59.2°F | 60.1°F |
| Sep 21 | 62.1°F | 62.2°F |
| Sep 22 | 59.4°F | 60.6°F |
| Sep 23 | 62.4°F | 62.6°F |
| Sep 24 | 63.3°F | 63.7°F |
| Sep 25 | 63.3°F | 63.9°F |