Average Soil Temperature in Sun Valley, ID — September 2025
Data from Arco 17 SW (41.6 mi away) • 30 of 30 days reported
Monthly Summary by Depth
2" depth
68°F
avg
62.2°F – 75.2°F
30 days
4" depth
66.9°F
avg
62.1°F – 73.2°F
30 days
Daily Readings
| Date | 2" | 4" |
|---|---|---|
| Sep 1 | 73.2°F | 71.6°F |
| Sep 2 | 73.6°F | 72°F |
| Sep 3 | 74.8°F | 72.5°F |
| Sep 4 | 75.2°F | 73.2°F |
| Sep 5 | 74.5°F | 72.5°F |
| Sep 6 | 70.9°F | 70.2°F |
| Sep 7 | 72.1°F | 70.3°F |
| Sep 8 | 71.6°F | 70.5°F |
| Sep 9 | 70.9°F | 69.4°F |
| Sep 10 | 69.8°F | 68.9°F |
| Sep 11 | 68.9°F | 68°F |
| Sep 12 | 68.2°F | 67.6°F |
| Sep 13 | 68°F | 67.3°F |
| Sep 14 | 67.8°F | 67.3°F |
| Sep 15 | 64.9°F | 65.7°F |
| Sep 16 | 64.6°F | 63.9°F |
| Sep 17 | 66.6°F | 65.1°F |
| Sep 18 | 67.5°F | 65.8°F |
| Sep 19 | 66.4°F | 65.1°F |
| Sep 20 | 67.1°F | 65.3°F |
| Sep 21 | 67.3°F | 66.6°F |
| Sep 22 | 64.8°F | 64.6°F |
| Sep 23 | 62.2°F | 62.1°F |
| Sep 24 | 63.5°F | 62.4°F |
| Sep 25 | 64.8°F | 63.1°F |
| Sep 26 | 65.3°F | 64.2°F |
| Sep 27 | 63.9°F | 63°F |
| Sep 28 | 64.2°F | 62.8°F |
| Sep 29 | 65.1°F | 63.7°F |
| Sep 30 | 62.4°F | 63.3°F |