Average Soil Temperature in Great Falls, MT for December 2025
Data from Conrad Ag Rc (62.6 mi away) • 31 of 31 days reported
Monthly Summary by Depth
2" depth
27.9°F
avg
11.3°F – 34.9°F
31 days
4" depth
29.3°F
avg
19.8°F – 32.2°F
31 days
8" depth
34.1°F
avg
26.2°F – 37.6°F
31 days
20" depth
34.1°F
avg
29.7°F – 36.5°F
31 days
40" depth
41.6°F
avg
38.3°F – 44.6°F
31 days
Daily Readings
| Date | 2" | 4" | 8" | 20" | 40" |
|---|---|---|---|---|---|
| Dec 1 | 28.6°F | 28.8°F | 36°F | 36.5°F | 44.6°F |
| Dec 2 | 29.7°F | 30.2°F | 36.7°F | 36.3°F | 44.2°F |
| Dec 3 | 28.6°F | 29.8°F | 36.5°F | 36.3°F | 43.9°F |
| Dec 4 | 29.5°F | 30.4°F | 36.5°F | 36.1°F | 43.7°F |
| Dec 5 | 29.8°F | 30.2°F | 35.8°F | 36°F | 43.3°F |
| Dec 6 | 27°F | 29.5°F | 35.8°F | 35.8°F | 43.2°F |
| Dec 7 | 29.1°F | 30.2°F | 35.8°F | 35.6°F | 43°F |
| Dec 8 | 31.5°F | 30.9°F | 36.5°F | 35.6°F | 42.8°F |
| Dec 9 | 31.6°F | 31.5°F | 37.2°F | 35.8°F | 42.6°F |
| Dec 10 | 33.4°F | 31.5°F | 37.6°F | 36°F | 42.6°F |
| Dec 11 | 21.9°F | 31.1°F | 36.5°F | 36.3°F | 42.4°F |
| Dec 12 | 26.1°F | 28.8°F | 34.9°F | 35.6°F | 42.4°F |
| Dec 13 | 27.7°F | 28.9°F | 34°F | 34.9°F | 42.3°F |
| Dec 14 | 31.3°F | 30.4°F | 34.3°F | 34.5°F | 42.1°F |
| Dec 15 | 34.9°F | 31.3°F | 34.9°F | 34.3°F | 41.7°F |
| Dec 16 | 32°F | 31.6°F | 36.5°F | 34.7°F | 41.5°F |
| Dec 17 | 28°F | 32.2°F | 36.5°F | 35.1°F | 41.5°F |
| Dec 18 | 31.1°F | 31.3°F | 35.6°F | 34.9°F | 41.5°F |
| Dec 19 | 25°F | 30.9°F | 35.2°F | 34.7°F | 41.4°F |
| Dec 20 | 26.6°F | 29.5°F | 34°F | 34.3°F | 41.4°F |
| Dec 21 | 27°F | 29.1°F | 33.1°F | 33.8°F | 41.2°F |
| Dec 22 | 22.6°F | 28°F | 32.4°F | 33.3°F | 40.8°F |
| Dec 23 | 27.1°F | 28.8°F | 32°F | 32.5°F | 40.6°F |
| Dec 24 | 23.4°F | 25.7°F | 30°F | 32.2°F | 40.3°F |
| Dec 25 | 29.5°F | 29.5°F | 32.2°F | 31.6°F | 39.9°F |
| Dec 26 | 28°F | 30°F | 33.1°F | 31.8°F | 39.7°F |
| Dec 27 | 11.3°F | 19.8°F | 27.9°F | 31.6°F | 39.6°F |
| Dec 28 | 20.7°F | 22.3°F | 26.2°F | 30.4°F | 39.2°F |
| Dec 29 | 27.7°F | 27.5°F | 29.8°F | 29.7°F | 38.8°F |
| Dec 30 | 30.9°F | 29.5°F | 32°F | 29.8°F | 38.5°F |
| Dec 31 | 32°F | 30.6°F | 33.1°F | 30.4°F | 38.3°F |