Average Soil Temperature in Helena, MT for May 2025
Data from Table Mountain (59.7 mi away) • 31 of 31 days reported
Monthly Summary by Depth
2" depth
54.2°F
avg
45°F – 65.7°F
31 days
4" depth
55.7°F
avg
46.4°F – 65.8°F
31 days
8" depth
55.4°F
avg
48.6°F – 61.9°F
31 days
20" depth
52.4°F
avg
48.2°F – 56.8°F
31 days
40" depth
47.8°F
avg
44.4°F – 50.5°F
31 days
Daily Readings
| Date | 2" | 4" | 8" | 20" | 40" |
|---|---|---|---|---|---|
| May 1 | 49.5°F | 51.8°F | 52.5°F | 48.2°F | 44.4°F |
| May 2 | 52.9°F | 54.7°F | 54.5°F | 48.9°F | 44.6°F |
| May 3 | 55.6°F | 57.2°F | 56.7°F | 50°F | 45°F |
| May 4 | 53.1°F | 55.4°F | 56.3°F | 51.1°F | 45.3°F |
| May 5 | 45°F | 46.4°F | 48.6°F | 51.1°F | 45.7°F |
| May 6 | 46.2°F | 48.6°F | 50.2°F | 50°F | 46.2°F |
| May 7 | 52.9°F | 54.1°F | 53.6°F | 49.8°F | 46.2°F |
| May 8 | 54.9°F | 57°F | 56.8°F | 50.9°F | 46.4°F |
| May 9 | 57.7°F | 59.2°F | 58.3°F | 52°F | 46.6°F |
| May 10 | 56.7°F | 57.7°F | 57.6°F | 52.9°F | 46.9°F |
| May 11 | 55°F | 56.3°F | 56.7°F | 53.4°F | 47.3°F |
| May 12 | 52.7°F | 54.7°F | 55.9°F | 53.6°F | 47.7°F |
| May 13 | 49.6°F | 51.1°F | 52.5°F | 53.2°F | 48°F |
| May 14 | 48.9°F | 50.4°F | 51.3°F | 52.3°F | 48.2°F |
| May 15 | 49.8°F | 51.1°F | 51.4°F | 51.8°F | 48.4°F |
| May 16 | 50.5°F | 51.6°F | 51.8°F | 51.4°F | 48.4°F |
| May 17 | 53.4°F | 54.5°F | 54°F | 51.6°F | 48.4°F |
| May 18 | 50°F | 51.8°F | 52.9°F | 52°F | 48.4°F |
| May 19 | 52.9°F | 54.5°F | 54.3°F | 52°F | 48.4°F |
| May 20 | 53.2°F | 54.9°F | 54.5°F | 52.2°F | 48.6°F |
| May 21 | 50.7°F | 53.4°F | 53.6°F | 52.3°F | 48.6°F |
| May 22 | 49.6°F | 51.4°F | 51.6°F | 52.2°F | 48.7°F |
| May 23 | 53.6°F | 55.4°F | 54.3°F | 51.8°F | 48.7°F |
| May 24 | 55.9°F | 57.6°F | 56.1°F | 52.3°F | 48.7°F |
| May 25 | 58.3°F | 59.5°F | 57.6°F | 53.1°F | 48.9°F |
| May 26 | 60.1°F | 61.2°F | 59.2°F | 54°F | 49.1°F |
| May 27 | 60.3°F | 61.9°F | 60.3°F | 54.9°F | 49.3°F |
| May 28 | 61°F | 62.2°F | 60.3°F | 55.6°F | 49.6°F |
| May 29 | 62.4°F | 63.7°F | 61.2°F | 56.1°F | 50°F |
| May 30 | 61°F | 63.1°F | 61.3°F | 56.7°F | 50.2°F |
| May 31 | 65.7°F | 65.8°F | 61.9°F | 56.8°F | 50.5°F |