Average Soil Temperature in Bismarck, ND for May 2026
Data from Mandan #1 (6.9 mi away) • 28 of 31 days reported
Monthly Summary by Depth
2" depth
49.2°F
avg
39.7°F – 60.1°F
28 days
4" depth
47.6°F
avg
40.6°F – 59°F
28 days
8" depth
45.6°F
avg
40.3°F – 54.1°F
28 days
20" depth
43.2°F
avg
39.2°F – 49.1°F
28 days
40" depth
40.6°F
avg
38.5°F – 43.5°F
28 days
Daily Readings
| Date | 2" | 4" | 8" | 20" | 40" |
|---|---|---|---|---|---|
| May 1 | 42.8°F | 41.4°F | 40.3°F | 39.2°F | 38.5°F |
| May 2 | 43.9°F | 42.8°F | 41.2°F | 39.6°F | 38.7°F |
| May 3 | 46°F | 43.9°F | 42.1°F | 40.1°F | 38.7°F |
| May 4 | 41.7°F | 42.1°F | 41.7°F | 40.6°F | 38.8°F |
| May 5 | 39.7°F | 40.6°F | 40.8°F | 40.5°F | 39°F |
| May 6 | 41.2°F | 41°F | 40.6°F | 40.3°F | 39.2°F |
| May 7 | 43.9°F | 42.3°F | 41.2°F | 40.1°F | 39.2°F |
| May 8 | 46°F | 43.7°F | 42.1°F | 40.5°F | 39.4°F |
| May 9 | 45°F | 44.1°F | 43°F | 41°F | 39.4°F |
| May 10 | 46.9°F | 45°F | 43.2°F | 41.4°F | 39.6°F |
| May 11 | 49.1°F | 46.4°F | 44.2°F | 41.7°F | 39.7°F |
| May 12 | 48°F | 46.8°F | 45.1°F | 42.3°F | 39.9°F |
| May 13 | 51.1°F | 48°F | 45.7°F | 42.8°F | 40.1°F |
| May 14 | 50.7°F | 48.7°F | 46.8°F | 43.3°F | 40.5°F |
| May 15 | 49.5°F | 48.4°F | 46.8°F | 43.9°F | 40.6°F |
| May 16 | 50.7°F | 48.7°F | 46.8°F | 44.1°F | 40.8°F |
| May 17 | 46.8°F | 46.2°F | 45.7°F | 44.2°F | 41.2°F |
| May 18 | 45.7°F | 45.1°F | 44.8°F | 44.1°F | 41.4°F |
| May 19 | 47.8°F | 46.2°F | 45.1°F | 43.9°F | 41.5°F |
| May 20 | 50°F | 48.2°F | 46°F | 43.9°F | 41.7°F |
| May 21 | 51.8°F | 49.6°F | 47.1°F | 44.4°F | 41.7°F |
| May 22 | 49.6°F | 48.6°F | 47.1°F | 44.8°F | 41.9°F |
| May 23 | 54.1°F | 51.4°F | 48.6°F | 45.1°F | 42.1°F |
| May 24 | 56.7°F | 53.6°F | 50°F | 45.7°F | 42.3°F |
| May 25 | 58.6°F | 55.4°F | 51.6°F | 46.6°F | 42.4°F |
| May 26 | 59.5°F | 59°F | 52.7°F | 47.5°F | 42.8°F |
| May 27 | 59.9°F | 57.2°F | 53.6°F | 48.4°F | 43.2°F |
| May 28 | 60.1°F | 57.6°F | 54.1°F | 49.1°F | 43.5°F |