Average Soil Temperature in Helena, MT for October 2026
Data from Table Mountain (59.7 mi away) • 25 of 31 days reported
Monthly Summary by Depth
2" depth
48.3°F
avg
39.9°F – 56.7°F
25 days
4" depth
49.4°F
avg
41°F – 57.9°F
25 days
8" depth
50.6°F
avg
43.7°F – 58.1°F
25 days
20" depth
53.4°F
avg
48.6°F – 58.5°F
25 days
40" depth
55.4°F
avg
51.8°F – 58.1°F
25 days
Daily Readings
| Date | 2" | 4" | 8" | 20" | 40" |
|---|---|---|---|---|---|
| Oct 1 | 56.7°F | 57.9°F | 58.1°F | 58.5°F | 58.1°F |
| Oct 2 | 56.3°F | 57.7°F | 58.1°F | 58.5°F | 58.1°F |
| Oct 3 | 55.8°F | 57.4°F | 57.7°F | 58.3°F | 57.9°F |
| Oct 4 | 55.9°F | 57.6°F | 57.4°F | 58.1°F | 57.7°F |
| Oct 5 | 56.5°F | 57.7°F | 57.6°F | 58.1°F | 57.7°F |
| Oct 6 | 54.9°F | 56.7°F | 57.2°F | 57.9°F | 57.6°F |
| Oct 7 | 54.3°F | 56.1°F | 56.5°F | 57.7°F | 57.6°F |
| Oct 8 | 54.3°F | 55.9°F | 55.9°F | 57.4°F | 57.4°F |
| Oct 9 | 56.3°F | 57.2°F | 56.5°F | 57.2°F | 57.2°F |
| Oct 10 | 48.4°F | 50.4°F | 54.5°F | 57.2°F | 57°F |
| Oct 11 | 44.6°F | 45.7°F | 49.6°F | 55.9°F | 57°F |
| Oct 12 | 42.8°F | 43.7°F | 47.5°F | 54.3°F | 56.7°F |
| Oct 13 | 41.4°F | 42.6°F | 45.9°F | 52.9°F | 56.3°F |
| Oct 14 | 40.5°F | 41.5°F | 44.6°F | 51.4°F | 55.8°F |
| Oct 15 | 39.9°F | 41°F | 43.9°F | 50.2°F | 55°F |
| Oct 16 | 40.6°F | 41.2°F | 43.9°F | 49.1°F | 54.5°F |
| Oct 17 | 45.3°F | 45.5°F | 45.3°F | 48.6°F | 53.8°F |
| Oct 18 | 45.3°F | 46.2°F | 46.8°F | 48.7°F | 53.2°F |
| Oct 19 | 46.8°F | 47.5°F | 46.9°F | 48.9°F | 52.9°F |
| Oct 20 | 46°F | 47.1°F | 47.1°F | 49.1°F | 52.5°F |
| Oct 21 | 47.1°F | 48°F | 47.5°F | 49.3°F | 52.2°F |
| Oct 22 | 51.1°F | 50.9°F | 49.1°F | 49.6°F | 52.2°F |
| Oct 23 | 44.6°F | 45.7°F | 47.7°F | 50.2°F | 52°F |
| Oct 24 | 41.7°F | 43.2°F | 45.5°F | 49.6°F | 51.8°F |
| Oct 25 | 40.3°F | 41.4°F | 43.7°F | 48.6°F | 51.8°F |