Average Soil Temperature in Duncan, OK for May 2026
Data from Fort Reno #1 (72.2 mi away) • 26 of 31 days reported
Monthly Summary by Depth
2" depth
67.5°F
avg
60.8°F – 74.8°F
26 days
4" depth
67.2°F
avg
61.2°F – 72.7°F
26 days
8" depth
65.4°F
avg
61.7°F – 69.6°F
26 days
20" depth
63.4°F
avg
61.2°F – 66.7°F
26 days
40" depth
62.2°F
avg
61.2°F – 64.4°F
26 days
Daily Readings
| Date | 2" | 4" | 8" | 20" | 40" |
|---|---|---|---|---|---|
| May 1 | 60.8°F | 61.2°F | 61.7°F | 61.3°F | 61.5°F |
| May 2 | 62.4°F | 61.9°F | 61.7°F | 61.2°F | 61.3°F |
| May 3 | 67.1°F | 64.6°F | 62.6°F | 61.2°F | 61.2°F |
| May 4 | 69.6°F | 66.7°F | 63.9°F | 61.7°F | 61.2°F |
| May 5 | 61°F | 61.5°F | 62.6°F | 62.1°F | 61.2°F |
| May 6 | 61°F | 61.3°F | 61.7°F | 61.3°F | 61.3°F |
| May 7 | 64.8°F | 63.3°F | 62.1°F | 61.2°F | 61.2°F |
| May 8 | 66.7°F | 65.5°F | 63.1°F | 61.3°F | 61.2°F |
| May 9 | 70°F | 67.6°F | 64.4°F | 62.1°F | 61.2°F |
| May 10 | 61.2°F | 62.4°F | 63°F | 62.1°F | 61.3°F |
| May 11 | 63.3°F | 64°F | 63.1°F | 61.7°F | 61.3°F |
| May 12 | 69.3°F | 67.5°F | 64.4°F | 62.1°F | 61.3°F |
| May 13 | 72°F | 69.4°F | 65.8°F | 62.6°F | 61.3°F |
| May 14 | 73.4°F | 70.3°F | 66.7°F | 63.5°F | 61.5°F |
| May 15 | 71.8°F | 70.5°F | 67.5°F | 64.2°F | 61.9°F |
| May 16 | 73.4°F | 71.4°F | 68.5°F | 64.8°F | 62.2°F |
| May 17 | 74.8°F | 72.7°F | 68.9°F | 65.5°F | 62.6°F |
| May 20 | 61.2°F | 64.2°F | 64.4°F | 64.4°F | 63.5°F |
| May 21 | 64.9°F | 65.1°F | 64.2°F | 63.9°F | 63.3°F |
| May 22 | 69.1°F | 69.6°F | 66.4°F | 64.2°F | 63.3°F |
| May 23 | 66.2°F | 70.2°F | 67.8°F | 64.8°F | 63.3°F |
| May 24 | 71.2°F | 71.8°F | 68.9°F | 65.5°F | 63.3°F |
| May 25 | 71.1°F | 72°F | 69.6°F | 66°F | 63.7°F |
| May 26 | 70.9°F | 71.1°F | 69.6°F | 66.4°F | 63.9°F |
| May 27 | 68.5°F | 70.2°F | 68.5°F | 66.4°F | 64.2°F |
| May 28 | 69.8°F | 72.3°F | 69.6°F | 66.7°F | 64.4°F |