Average Soil Temperature in Sioux Falls, SD for August 2026
Data from Sioux Falls 14 NNE (13.2 mi away) • 25 of 31 days reported
Monthly Summary by Depth
2" depth
75.7°F
avg
73°F – 80.2°F
25 days
4" depth
74.6°F
avg
72.3°F – 78.3°F
25 days
8" depth
72.5°F
avg
71.1°F – 74.8°F
25 days
20" depth
71.7°F
avg
70.7°F – 73.2°F
25 days
40" depth
69.9°F
avg
69.3°F – 71.1°F
25 days
Daily Readings
| Date | 2" | 4" | 8" | 20" | 40" |
|---|---|---|---|---|---|
| Aug 1 | 75.7°F | 74.3°F | 72.7°F | 72.3°F | 71.1°F |
| Aug 2 | 77.4°F | 75.7°F | 73.2°F | 72.3°F | 70.7°F |
| Aug 3 | 77.9°F | 76.3°F | 73.8°F | 72.7°F | 70.7°F |
| Aug 4 | 74.5°F | 74.5°F | 73.2°F | 72.7°F | 70.7°F |
| Aug 5 | 74.1°F | 73°F | 71.6°F | 71.4°F | 70.3°F |
| Aug 6 | 75.2°F | 73.9°F | 71.8°F | 71.2°F | 70°F |
| Aug 7 | 75.4°F | 74.5°F | 72.3°F | 71.6°F | 69.8°F |
| Aug 8 | 74.3°F | 73.2°F | 71.4°F | 70.9°F | 69.6°F |
| Aug 9 | 75.9°F | 74.5°F | 72.1°F | 71.2°F | 69.4°F |
| Aug 10 | 77.7°F | 75.7°F | 73°F | 71.8°F | 69.6°F |
| Aug 11 | 80.1°F | 77.7°F | 74.3°F | 72.5°F | 69.8°F |
| Aug 12 | 80.2°F | 78.3°F | 74.8°F | 73.2°F | 70.3°F |
| Aug 13 | 77°F | 76.5°F | 74.5°F | 73.2°F | 70.5°F |
| Aug 14 | 73°F | 73.2°F | 72.9°F | 72.3°F | 70.5°F |
| Aug 15 | 74.3°F | 73.6°F | 72.5°F | 71.8°F | 70.2°F |
| Aug 16 | 74.7°F | 73.6°F | 72.3°F | 71.6°F | 70°F |
| Aug 17 | 74.8°F | 73.8°F | 71.8°F | 71.2°F | 69.8°F |
| Aug 18 | 77.7°F | 76.1°F | 73°F | 71.8°F | 69.6°F |
| Aug 19 | 73°F | 73.2°F | 72.1°F | 71.6°F | 69.8°F |
| Aug 20 | 73°F | 72.3°F | 71.1°F | 70.7°F | 69.6°F |
| Aug 21 | 74.3°F | 73.4°F | 71.6°F | 70.9°F | 69.4°F |
| Aug 22 | 75°F | 73.9°F | 71.6°F | 70.9°F | 69.3°F |
| Aug 23 | 73.9°F | 73.2°F | 71.2°F | 70.7°F | 69.3°F |
| Aug 24 | 75.9°F | 74.7°F | 72°F | 70.9°F | 69.3°F |
| Aug 25 | 76.6°F | 75.2°F | 72.3°F | 71.2°F | 69.3°F |