Average Soil Temperature in Portsmouth, NH for October 2026
Data from Durham 2 SSW (7.7 mi away) • 25 of 31 days reported
Monthly Summary by Depth
2" depth
52.9°F
avg
45°F – 63.7°F
25 days
4" depth
53.9°F
avg
46.8°F – 61.9°F
25 days
Daily Readings
| Date | 2" | 4" |
|---|---|---|
| Oct 1 | 61.2°F | 60.1°F |
| Oct 2 | 63.7°F | 61.9°F |
| Oct 3 | 61°F | 61.3°F |
| Oct 4 | 57.4°F | 58.6°F |
| Oct 5 | 58.6°F | 58.8°F |
| Oct 6 | 55°F | 56.7°F |
| Oct 7 | 53.1°F | 54.7°F |
| Oct 8 | 54.9°F | 55.2°F |
| Oct 9 | 53.6°F | 54.9°F |
| Oct 10 | 52.2°F | 53.6°F |
| Oct 11 | 51.3°F | 52.7°F |
| Oct 12 | 54.7°F | 54.1°F |
| Oct 13 | 54.3°F | 55°F |
| Oct 14 | 54.9°F | 54.5°F |
| Oct 15 | 54.5°F | 55.2°F |
| Oct 16 | 52.9°F | 53.8°F |
| Oct 17 | 51.8°F | 53.6°F |
| Oct 18 | 47.7°F | 50.2°F |
| Oct 19 | 47.5°F | 49.5°F |
| Oct 20 | 47.8°F | 49.3°F |
| Oct 21 | 48.4°F | 49.6°F |
| Oct 22 | 48.9°F | 49.8°F |
| Oct 23 | 47.7°F | 49.3°F |
| Oct 24 | 45.3°F | 47.5°F |
| Oct 25 | 45°F | 46.8°F |