Average Soil Temperature in Helena, MT for May 2021
Data from Table Mountain (59.7 mi away) • 31 of 31 days reported
Monthly Summary by Depth
2" depth
50.5°F
avg
39.7°F – 61.2°F
31 days
4" depth
52.5°F
avg
41.5°F – 62.6°F
31 days
8" depth
51.9°F
avg
44.2°F – 58.6°F
31 days
20" depth
49.5°F
avg
46.9°F – 53.4°F
31 days
40" depth
45.7°F
avg
42.1°F – 47.8°F
31 days
Daily Readings
| Date | 2" | 4" | 8" | 20" | 40" |
|---|---|---|---|---|---|
| May 1 | 52.3°F | 53.8°F | 51.6°F | 46.9°F | 42.1°F |
| May 2 | 48.6°F | 50.7°F | 50.4°F | 47.5°F | 42.6°F |
| May 3 | 51.6°F | 53.1°F | 50.9°F | 47.5°F | 43°F |
| May 4 | 49.3°F | 51.3°F | 50.4°F | 47.8°F | 43.3°F |
| May 5 | 52.7°F | 54.3°F | 51.8°F | 48°F | 43.7°F |
| May 6 | 57°F | 58.3°F | 54°F | 48.6°F | 43.9°F |
| May 7 | 48.4°F | 50.9°F | 52.3°F | 49.5°F | 44.2°F |
| May 8 | 43.3°F | 45.5°F | 47.8°F | 49.1°F | 44.6°F |
| May 9 | 42.4°F | 45.5°F | 48°F | 48.2°F | 44.8°F |
| May 10 | 45.1°F | 47.7°F | 48.4°F | 47.8°F | 45°F |
| May 11 | 47.5°F | 50°F | 49.8°F | 47.7°F | 45°F |
| May 12 | 53.4°F | 54.5°F | 51.8°F | 48°F | 45°F |
| May 13 | 54.9°F | 56.5°F | 54.1°F | 48.9°F | 45.1°F |
| May 14 | 53.4°F | 55.6°F | 54.5°F | 49.8°F | 45.3°F |
| May 15 | 55.6°F | 57.9°F | 55.8°F | 50.5°F | 45.7°F |
| May 16 | 57.9°F | 60.1°F | 57.2°F | 51.3°F | 45.9°F |
| May 17 | 61.2°F | 62.6°F | 58.6°F | 52.2°F | 46.4°F |
| May 18 | 58.1°F | 60.4°F | 58.3°F | 53.1°F | 46.8°F |
| May 19 | 55.8°F | 57.7°F | 56.8°F | 53.4°F | 47.1°F |
| May 20 | 41.4°F | 44.2°F | 49.6°F | 52.9°F | 47.7°F |
| May 21 | 39.7°F | 41.5°F | 45.7°F | 50.9°F | 47.8°F |
| May 22 | 40.5°F | 41.5°F | 44.4°F | 49.3°F | 47.8°F |
| May 23 | 42.6°F | 43.7°F | 44.2°F | 47.8°F | 47.5°F |
| May 24 | 45.5°F | 46.4°F | 46°F | 47.3°F | 47.1°F |
| May 25 | 50.9°F | 51.8°F | 50.2°F | 47.7°F | 46.8°F |
| May 26 | 47.5°F | 50°F | 50.5°F | 48.6°F | 46.6°F |
| May 27 | 52.9°F | 54.5°F | 53.1°F | 49.1°F | 46.6°F |
| May 28 | 49.6°F | 53.1°F | 54.1°F | 50°F | 46.8°F |
| May 29 | 52.3°F | 55.4°F | 54.9°F | 50.7°F | 46.9°F |
| May 30 | 55.8°F | 58.5°F | 56.1°F | 51.3°F | 47.1°F |
| May 31 | 58.5°F | 60.6°F | 57.2°F | 52.2°F | 47.5°F |