Average Soil Temperature in Spearfish, SD — July 2025
Data from Sundance 8 NNW (28.4 mi away) • 31 of 31 days reported
Monthly Summary by Depth
2" depth
64.5°F
avg
57.6°F – 68°F
31 days
4" depth
63.9°F
avg
57.2°F – 67.3°F
31 days
8" depth
62.4°F
avg
59.2°F – 64.6°F
31 days
20" depth
59.3°F
avg
57.4°F – 61.2°F
31 days
40" depth
57.1°F
avg
55°F – 59°F
31 days
Daily Readings
| Date | 2" | 4" | 8" | 20" | 40" |
|---|---|---|---|---|---|
| Jul 1 | 63.1°F | 62.4°F | 60.4°F | 57.4°F | 55°F |
| Jul 2 | 65.1°F | 64.4°F | 61.7°F | 57.7°F | 55.2°F |
| Jul 3 | 65.3°F | 64.9°F | 62.6°F | 58.1°F | 55.4°F |
| Jul 4 | 63.7°F | 63.3°F | 62.2°F | 58.5°F | 55.8°F |
| Jul 5 | 63.5°F | 62.6°F | 61.7°F | 58.6°F | 55.9°F |
| Jul 6 | 63.9°F | 63°F | 61.5°F | 58.5°F | 56.1°F |
| Jul 7 | 57.6°F | 57.2°F | 59.2°F | 58.3°F | 56.3°F |
| Jul 8 | 63.1°F | 62.6°F | 60.1°F | 57.6°F | 56.1°F |
| Jul 9 | 65.5°F | 65.1°F | 62.1°F | 58.1°F | 56.1°F |
| Jul 10 | 65.8°F | 65.3°F | 63°F | 58.8°F | 56.3°F |
| Jul 11 | 62.4°F | 62.1°F | 62.2°F | 59.4°F | 56.5°F |
| Jul 12 | 60.8°F | 60.4°F | 60.1°F | 58.8°F | 56.7°F |
| Jul 13 | 62.6°F | 62.1°F | 60.6°F | 58.5°F | 56.7°F |
| Jul 14 | 65.3°F | 64.8°F | 61.9°F | 58.6°F | 56.7°F |
| Jul 15 | 63.5°F | 63°F | 62.2°F | 59.2°F | 56.8°F |
| Jul 16 | 59.5°F | 58.6°F | 59.9°F | 58.8°F | 57°F |
| Jul 17 | 61.3°F | 60.3°F | 59.4°F | 58.1°F | 57°F |
| Jul 18 | 64.6°F | 63.5°F | 61.3°F | 58.3°F | 56.8°F |
| Jul 19 | 65.5°F | 64.6°F | 62.4°F | 58.8°F | 56.8°F |
| Jul 20 | 66.6°F | 65.8°F | 63.3°F | 59.4°F | 57°F |
| Jul 21 | 68°F | 67.1°F | 64.2°F | 60.1°F | 57.4°F |
| Jul 22 | 67.8°F | 67.3°F | 64.6°F | 60.4°F | 57.7°F |
| Jul 23 | 66.7°F | 66.4°F | 64.6°F | 61°F | 57.9°F |
| Jul 24 | 65.5°F | 65.1°F | 63.7°F | 60.8°F | 58.3°F |
| Jul 25 | 66.4°F | 66°F | 64.2°F | 60.8°F | 58.5°F |
| Jul 26 | 66.9°F | 66.4°F | 64.4°F | 61°F | 58.5°F |
| Jul 27 | 66.7°F | 66.4°F | 64.6°F | 61.2°F | 58.6°F |
| Jul 28 | 66.2°F | 65.7°F | 64.2°F | 61.2°F | 58.8°F |
| Jul 29 | 66.4°F | 65.8°F | 64°F | 61.2°F | 58.8°F |
| Jul 30 | 65.7°F | 64.9°F | 63.7°F | 61.2°F | 59°F |
| Jul 31 | 65.8°F | 64.8°F | 63.7°F | 61.2°F | 59°F |