Average Soil Temperature in Harlan, IA for May 2021
Data from Shagbark Hills (59.4 mi away) • 31 of 31 days reported
Monthly Summary by Depth
2" depth
57.5°F
avg
48.6°F – 67.1°F
31 days
4" depth
58.2°F
avg
49.6°F – 67.5°F
31 days
8" depth
57.8°F
avg
51.6°F – 66.4°F
31 days
20" depth
54.7°F
avg
50.9°F – 60.8°F
31 days
40" depth
50.9°F
avg
47.3°F – 55°F
31 days
Daily Readings
| Date | 2" | 4" | 8" | 20" | 40" |
|---|---|---|---|---|---|
| May 1 | 58.1°F | 57.9°F | 56.1°F | 50.9°F | 47.3°F |
| May 2 | 59°F | 59.4°F | 57.7°F | 52°F | 47.7°F |
| May 3 | 55.9°F | 56.7°F | 56.7°F | 52.9°F | 48°F |
| May 4 | 53.1°F | 54.3°F | 54.9°F | 52.9°F | 48.6°F |
| May 5 | 50.7°F | 51.8°F | 52.9°F | 52.3°F | 48.9°F |
| May 6 | 52.3°F | 52.9°F | 53.1°F | 51.8°F | 49.1°F |
| May 7 | 53.2°F | 54°F | 53.8°F | 51.6°F | 49.3°F |
| May 8 | 48.6°F | 49.6°F | 51.6°F | 51.8°F | 49.3°F |
| May 9 | 51.4°F | 52.2°F | 52.2°F | 51.3°F | 49.5°F |
| May 10 | 51.3°F | 52.3°F | 52.5°F | 51.1°F | 49.5°F |
| May 11 | 51.6°F | 52.7°F | 52.9°F | 51.1°F | 49.5°F |
| May 12 | 52.2°F | 53.1°F | 53.1°F | 51.3°F | 49.5°F |
| May 13 | 53.2°F | 54°F | 53.6°F | 51.6°F | 49.5°F |
| May 14 | 52.5°F | 53.4°F | 53.4°F | 51.8°F | 49.6°F |
| May 15 | 56.5°F | 56.7°F | 55.4°F | 52.2°F | 49.8°F |
| May 16 | 57.2°F | 57.6°F | 56.5°F | 52.9°F | 49.8°F |
| May 17 | 57.4°F | 57.7°F | 57°F | 53.6°F | 50.2°F |
| May 18 | 57.9°F | 58.5°F | 57.7°F | 54.1°F | 50.4°F |
| May 19 | 60.3°F | 60.3°F | 59°F | 54.7°F | 50.7°F |
| May 20 | 61.2°F | 61.3°F | 60.3°F | 55.6°F | 50.9°F |
| May 21 | 64°F | 63.9°F | 61.9°F | 56.3°F | 51.4°F |
| May 22 | 65.8°F | 65.7°F | 63.7°F | 57.4°F | 51.8°F |
| May 23 | 67.1°F | 67.1°F | 65.1°F | 58.6°F | 52.3°F |
| May 24 | 66.4°F | 66.7°F | 65.3°F | 59.7°F | 52.9°F |
| May 25 | 66.4°F | 67.5°F | 66.4°F | 60.4°F | 53.4°F |
| May 26 | 66°F | 66.6°F | 65.7°F | 60.8°F | 54°F |
| May 27 | 60.3°F | 61.7°F | 63.1°F | 60.8°F | 54.5°F |
| May 28 | 58.1°F | 59.4°F | 60.6°F | 60.1°F | 54.9°F |
| May 29 | 58.3°F | 59.2°F | 59.7°F | 59°F | 55°F |
| May 30 | 57°F | 57.9°F | 58.8°F | 58.5°F | 55°F |
| May 31 | 60.4°F | 61.2°F | 60.4°F | 57.9°F | 55°F |