Average Soil Temperature in Boise, ID for September 2026
Data from Orchard Range Site (23.9 mi away) • 25 of 30 days reported
Monthly Summary by Depth
2" depth
69.1°F
avg
62.1°F – 79.2°F
25 days
4" depth
72.5°F
avg
67.8°F – 82.9°F
25 days
8" depth
75°F
avg
72.7°F – 82.9°F
25 days
20" depth
72.8°F
avg
70.7°F – 78.6°F
25 days
40" depth
72.1°F
avg
70°F – 75.6°F
25 days
Daily Readings
| Date | 2" | 4" | 8" | 20" | 40" |
|---|---|---|---|---|---|
| Sep 1 | 79.2°F | 82.9°F | 82.9°F | 78.6°F | 75.6°F |
| Sep 2 | 76.8°F | 81.5°F | 82°F | 78.6°F | 75.6°F |
| Sep 3 | 71.4°F | 77.2°F | 79.2°F | 77.7°F | 75.6°F |
| Sep 4 | 63.5°F | 70.7°F | 74.7°F | 76.5°F | 75°F |
| Sep 5 | 67.8°F | 72.7°F | 75.6°F | 75°F | 74.7°F |
| Sep 6 | 65.8°F | 71.4°F | 75.6°F | 74.3°F | 73.9°F |
| Sep 7 | 62.1°F | 67.8°F | 73°F | 73.4°F | 73.4°F |
| Sep 8 | 63.5°F | 68.2°F | 72.7°F | 72.3°F | 73°F |
| Sep 9 | 66.7°F | 70.3°F | 73.9°F | 71.8°F | 72.7°F |
| Sep 10 | 68.9°F | 70.7°F | 72.7°F | 71.4°F | 72.3°F |
| Sep 11 | 69.3°F | 71.8°F | 75°F | 71.4°F | 71.8°F |
| Sep 12 | 72.3°F | 73.9°F | 75.6°F | 71.8°F | 71.4°F |
| Sep 13 | 66°F | 70.3°F | 74.7°F | 72.3°F | 71.4°F |
| Sep 14 | 64.4°F | 68.9°F | 73°F | 71.4°F | 71.4°F |
| Sep 15 | 67.8°F | 70.3°F | 72.7°F | 71.1°F | 71.1°F |
| Sep 16 | 71.1°F | 72.7°F | 74.3°F | 70.7°F | 70.7°F |
| Sep 17 | 72.7°F | 73.4°F | 74.7°F | 71.4°F | 70.7°F |
| Sep 18 | 70.3°F | 71.4°F | 73°F | 71.4°F | 70.7°F |
| Sep 19 | 68.2°F | 71.1°F | 73.9°F | 71.1°F | 70.3°F |
| Sep 20 | 69.3°F | 71.8°F | 74.3°F | 71.1°F | 70.3°F |
| Sep 21 | 71.1°F | 73°F | 74.7°F | 71.1°F | 70.3°F |
| Sep 22 | 70.7°F | 73°F | 74.7°F | 71.1°F | 70.3°F |
| Sep 23 | 70.3°F | 73°F | 74.7°F | 71.4°F | 70°F |
| Sep 24 | 74.3°F | 73.9°F | 74.7°F | 71.4°F | 70.3°F |
| Sep 25 | 64.4°F | 70°F | 73°F | 71.4°F | 70.3°F |