Average Soil Temperature in Spearfish, SD — April 2025
Data from Sundance 8 NNW (28.4 mi away) • 30 of 30 days reported
Monthly Summary by Depth
2" depth
39.3°F
avg
32.9°F – 48.6°F
30 days
4" depth
39.4°F
avg
33.1°F – 48°F
30 days
8" depth
38.6°F
avg
33.6°F – 44.6°F
30 days
20" depth
37.5°F
avg
34.2°F – 41.5°F
30 days
40" depth
37.4°F
avg
35.2°F – 40.3°F
30 days
Daily Readings
| Date | 2" | 4" | 8" | 20" | 40" |
|---|---|---|---|---|---|
| Apr 1 | 36.3°F | 36.5°F | 36.1°F | 35.1°F | 35.2°F |
| Apr 2 | 34.7°F | 35.1°F | 35.6°F | 35.4°F | 35.6°F |
| Apr 3 | 33.8°F | 34.2°F | 34.7°F | 35.1°F | 35.8°F |
| Apr 4 | 33.3°F | 33.6°F | 34.2°F | 34.9°F | 35.8°F |
| Apr 5 | 33.1°F | 33.4°F | 34°F | 34.7°F | 35.6°F |
| Apr 6 | 33.1°F | 33.3°F | 33.8°F | 34.5°F | 35.6°F |
| Apr 7 | 32.9°F | 33.1°F | 33.6°F | 34.2°F | 35.4°F |
| Apr 8 | 36°F | 36.7°F | 34.5°F | 34.2°F | 35.4°F |
| Apr 9 | 38.5°F | 38.5°F | 36.9°F | 34.9°F | 35.4°F |
| Apr 10 | 39.6°F | 39.2°F | 37.4°F | 35.6°F | 35.6°F |
| Apr 11 | 42.8°F | 42.4°F | 39.2°F | 36.3°F | 36°F |
| Apr 12 | 44.8°F | 44.4°F | 41.4°F | 37.6°F | 36.5°F |
| Apr 13 | 41.9°F | 42.3°F | 41.4°F | 38.7°F | 37°F |
| Apr 14 | 38.5°F | 38.7°F | 39.2°F | 38.7°F | 37.6°F |
| Apr 15 | 41°F | 40.3°F | 38.8°F | 38.1°F | 37.8°F |
| Apr 16 | 44.4°F | 43.9°F | 41°F | 38.5°F | 37.9°F |
| Apr 17 | 40.3°F | 40.6°F | 41.2°F | 39.4°F | 38.3°F |
| Apr 18 | 37.4°F | 37.9°F | 38.8°F | 39°F | 38.7°F |
| Apr 19 | 35.8°F | 36.7°F | 37.6°F | 38.5°F | 38.7°F |
| Apr 20 | 37°F | 37.9°F | 37.4°F | 37.8°F | 38.5°F |
| Apr 21 | 38.7°F | 39.2°F | 38.3°F | 37.8°F | 38.3°F |
| Apr 22 | 41.2°F | 41°F | 39.2°F | 37.9°F | 38.3°F |
| Apr 23 | 41.9°F | 41.4°F | 40.3°F | 38.7°F | 38.5°F |
| Apr 24 | 38.8°F | 39.2°F | 39.9°F | 39°F | 38.7°F |
| Apr 25 | 38.3°F | 38.3°F | 38.5°F | 38.8°F | 38.8°F |
| Apr 26 | 44.1°F | 43°F | 40.3°F | 38.7°F | 38.8°F |
| Apr 27 | 48.6°F | 48°F | 43.9°F | 39.7°F | 39°F |
| Apr 28 | 44.6°F | 45°F | 44.6°F | 41.4°F | 39.6°F |
| Apr 29 | 44.8°F | 44.8°F | 42.8°F | 41.4°F | 40.1°F |
| Apr 30 | 44.2°F | 44.6°F | 43.7°F | 41.5°F | 40.3°F |