Average Soil Temperature in Brandon, SD for September 2026
Data from Sioux Falls 14 NNE (9.6 mi away) • 25 of 30 days reported
Monthly Summary by Depth
2" depth
68.6°F
avg
61°F – 78.3°F
25 days
4" depth
68.6°F
avg
61.7°F – 76.5°F
25 days
8" depth
68.2°F
avg
62.2°F – 73.9°F
25 days
20" depth
68.2°F
avg
62.8°F – 73°F
25 days
40" depth
67.8°F
avg
63.5°F – 70.5°F
25 days
Daily Readings
| Date | 2" | 4" | 8" | 20" | 40" |
|---|---|---|---|---|---|
| Sep 1 | 75.7°F | 75.2°F | 73.4°F | 72.5°F | 70.2°F |
| Sep 2 | 77.4°F | 75.7°F | 73.4°F | 72.3°F | 70.2°F |
| Sep 3 | 76.5°F | 75.7°F | 73.8°F | 72.7°F | 70.2°F |
| Sep 4 | 78.3°F | 76.5°F | 73.4°F | 72.5°F | 70.3°F |
| Sep 5 | 76.8°F | 76.3°F | 73.9°F | 73°F | 70.5°F |
| Sep 6 | 74.1°F | 74.1°F | 73°F | 72.7°F | 70.5°F |
| Sep 7 | 72.9°F | 72.5°F | 71.8°F | 71.6°F | 70.3°F |
| Sep 8 | 73.9°F | 73.6°F | 72.5°F | 71.8°F | 70.2°F |
| Sep 9 | 70.2°F | 70.9°F | 71.1°F | 71.2°F | 70.2°F |
| Sep 10 | 69.4°F | 69.6°F | 69.8°F | 70°F | 69.6°F |
| Sep 11 | 71.6°F | 70.9°F | 69.8°F | 69.8°F | 69.1°F |
| Sep 12 | 68.5°F | 69.4°F | 69.4°F | 69.6°F | 68.9°F |
| Sep 13 | 66.7°F | 67.3°F | 67.6°F | 68.2°F | 68.5°F |
| Sep 14 | 64.4°F | 65.5°F | 66.2°F | 67.1°F | 67.8°F |
| Sep 15 | 65.1°F | 65.5°F | 65.7°F | 66.2°F | 67.1°F |
| Sep 16 | 63.5°F | 64.2°F | 64.9°F | 65.7°F | 66.6°F |
| Sep 17 | 66.7°F | 66.2°F | 65.8°F | 65.8°F | 66.2°F |
| Sep 18 | 65.7°F | 65.8°F | 65.8°F | 66°F | 66°F |
| Sep 19 | 65.5°F | 65.7°F | 65.7°F | 65.8°F | 65.8°F |
| Sep 20 | 63.5°F | 64.2°F | 64.9°F | 65.3°F | 65.7°F |
| Sep 21 | 61°F | 61.9°F | 63°F | 63.9°F | 64.9°F |
| Sep 22 | 61.5°F | 61.7°F | 62.4°F | 63.1°F | 64.4°F |
| Sep 23 | 62.1°F | 62.2°F | 62.6°F | 63.1°F | 64°F |
| Sep 24 | 61.3°F | 61.7°F | 62.4°F | 63°F | 63.7°F |
| Sep 25 | 61.9°F | 61.9°F | 62.2°F | 62.8°F | 63.5°F |