Average Soil Temperature in Duluth, MN for May 2025
Data from Sandstone 6 W (62.7 mi away) • 31 of 31 days reported
Monthly Summary by Depth
2" depth
52.1°F
avg
45.3°F – 58.6°F
31 days
4" depth
52.7°F
avg
46°F – 59°F
31 days
8" depth
50.7°F
avg
44.2°F – 55.8°F
31 days
20" depth
49.9°F
avg
43.7°F – 54.3°F
31 days
40" depth
46.4°F
avg
40.1°F – 50.2°F
31 days
Daily Readings
| Date | 2" | 4" | 8" | 20" | 40" |
|---|---|---|---|---|---|
| May 1 | 46.9°F | 47.3°F | 44.8°F | 43.9°F | 40.1°F |
| May 2 | 45.3°F | 46°F | 44.8°F | 44.2°F | 40.6°F |
| May 3 | 45.5°F | 46°F | 44.2°F | 43.7°F | 41°F |
| May 4 | 48.6°F | 49.1°F | 45.9°F | 44.8°F | 41.4°F |
| May 5 | 50.2°F | 50.7°F | 47.5°F | 46.2°F | 42.1°F |
| May 6 | 51.4°F | 51.8°F | 48.7°F | 47.3°F | 42.8°F |
| May 7 | 52°F | 52.7°F | 49.8°F | 48.4°F | 43.5°F |
| May 8 | 50.5°F | 51.3°F | 49.3°F | 48.4°F | 44.2°F |
| May 9 | 51.1°F | 51.6°F | 49.3°F | 48.6°F | 44.6°F |
| May 10 | 52.7°F | 53.2°F | 50.4°F | 49.3°F | 45°F |
| May 11 | 54°F | 54.5°F | 51.3°F | 50°F | 45.5°F |
| May 12 | 56.1°F | 56.5°F | 52.9°F | 51.1°F | 46.2°F |
| May 13 | 57.2°F | 57.7°F | 54°F | 52.2°F | 46.9°F |
| May 14 | 58.6°F | 59°F | 55.2°F | 53.2°F | 47.7°F |
| May 15 | 58.1°F | 58.6°F | 55.8°F | 53.8°F | 48.6°F |
| May 16 | 54.5°F | 55.4°F | 54.5°F | 53.6°F | 49.1°F |
| May 17 | 52.9°F | 53.6°F | 52.9°F | 52.3°F | 49.3°F |
| May 18 | 51.4°F | 52.3°F | 51.8°F | 51.4°F | 48.9°F |
| May 19 | 49.6°F | 50.5°F | 50.7°F | 50.7°F | 48.7°F |
| May 20 | 47.5°F | 48.4°F | 49.1°F | 49.6°F | 48.4°F |
| May 21 | 47.5°F | 48.4°F | 48.2°F | 48.7°F | 47.8°F |
| May 22 | 49.1°F | 49.8°F | 48.4°F | 48.4°F | 47.5°F |
| May 23 | 50.5°F | 51.3°F | 49.6°F | 49.5°F | 47.5°F |
| May 24 | 51.1°F | 51.8°F | 50.4°F | 50°F | 47.7°F |
| May 25 | 51.6°F | 52.2°F | 50.5°F | 50.4°F | 47.8°F |
| May 26 | 53.4°F | 54°F | 51.6°F | 51.1°F | 48°F |
| May 27 | 53.8°F | 54.3°F | 52.5°F | 51.8°F | 48.6°F |
| May 28 | 54.5°F | 55°F | 53.1°F | 52.3°F | 48.9°F |
| May 29 | 55.9°F | 56.3°F | 53.6°F | 52.7°F | 49.3°F |
| May 30 | 56.8°F | 57.4°F | 54.7°F | 53.6°F | 49.8°F |
| May 31 | 57.6°F | 58.3°F | 55.6°F | 54.3°F | 50.2°F |