Average Soil Temperature in Duncan, OK — January 2026
Data from Fort Reno #1 (72.2 mi away) • 31 of 31 days reported
Monthly Summary by Depth
2" depth
41.5°F
avg
34.3°F – 50.7°F
31 days
4" depth
42.8°F
avg
35.8°F – 51.3°F
31 days
8" depth
44.5°F
avg
38.8°F – 50.7°F
31 days
20" depth
46.7°F
avg
42.3°F – 50.4°F
31 days
40" depth
51.6°F
avg
48.4°F – 53.8°F
31 days
Daily Readings
| Date | 2" | 4" | 8" | 20" | 40" |
|---|---|---|---|---|---|
| Jan 1 | 47.8°F | 47.1°F | 47.3°F | 49.1°F | 53.8°F |
| Jan 2 | 48.2°F | 48°F | 48.4°F | 49.5°F | 53.6°F |
| Jan 3 | 44.2°F | 45.7°F | 47.8°F | 49.5°F | 53.4°F |
| Jan 4 | 46.8°F | 46.8°F | 47.3°F | 49.1°F | 53.2°F |
| Jan 5 | 47.8°F | 48°F | 48.6°F | 49.5°F | 53.2°F |
| Jan 6 | 46.2°F | 46.9°F | 48.2°F | 49.5°F | 53.1°F |
| Jan 7 | 50.7°F | 49.1°F | 48.4°F | 49.3°F | 53.1°F |
| Jan 8 | 49.6°F | 51.3°F | 50.7°F | 50.4°F | 53.1°F |
| Jan 9 | 45.9°F | 48.4°F | 49.3°F | 50.4°F | 53.2°F |
| Jan 10 | 41.7°F | 45.1°F | 47.5°F | 49.6°F | 53.2°F |
| Jan 11 | 41.7°F | 44.4°F | 46.4°F | 48.6°F | 53.1°F |
| Jan 12 | 43.5°F | 45.1°F | 46.4°F | 48.2°F | 52.9°F |
| Jan 13 | 46.2°F | 46.6°F | 46.8°F | 48.2°F | 52.7°F |
| Jan 14 | 42.4°F | 45.1°F | 47.1°F | 48.4°F | 52.5°F |
| Jan 15 | 43.2°F | 44.4°F | 45.7°F | 48°F | 52.3°F |
| Jan 16 | 41.7°F | 43.5°F | 45.5°F | 47.5°F | 52.2°F |
| Jan 17 | 37.9°F | 40.1°F | 43.9°F | 46.9°F | 52°F |
| Jan 18 | 38.1°F | 40.3°F | 42.4°F | 45.7°F | 51.8°F |
| Jan 19 | 37°F | 38.8°F | 42.4°F | 45.5°F | 51.4°F |
| Jan 20 | 38.1°F | 39.6°F | 41.5°F | 44.8°F | 51.1°F |
| Jan 21 | 38.5°F | 39.9°F | 42.1°F | 44.8°F | 50.7°F |
| Jan 22 | 42.1°F | 41.5°F | 42.1°F | 44.6°F | 50.4°F |
| Jan 23 | 36.7°F | 38.7°F | 41.9°F | 44.8°F | 50.2°F |
| Jan 24 | 36.3°F | 38.3°F | 40.6°F | 43.9°F | 50°F |
| Jan 25 | 37°F | 38.5°F | 40.5°F | 43.5°F | 49.6°F |
| Jan 26 | 37°F | 38.7°F | 40.5°F | 43.3°F | 49.5°F |
| Jan 27 | 36.9°F | 38.5°F | 40.5°F | 43.3°F | 49.1°F |
| Jan 28 | 36.1°F | 37.9°F | 40.3°F | 43.2°F | 48.9°F |
| Jan 29 | 36°F | 38.1°F | 40.1°F | 42.8°F | 48.7°F |
| Jan 30 | 35.8°F | 37.4°F | 39.6°F | 42.6°F | 48.6°F |
| Jan 31 | 34.3°F | 35.8°F | 38.8°F | 42.3°F | 48.4°F |