Average Soil Temperature in Modesto, CA — December 2025
Data from Merced 23 WSW (30.9 mi away) • 31 of 31 days reported
Monthly Summary by Depth
2" depth
54.1°F
avg
51.4°F – 57.4°F
31 days
4" depth
55.4°F
avg
53.4°F – 57.6°F
31 days
8" depth
56.9°F
avg
55.4°F – 58.5°F
31 days
20" depth
57.1°F
avg
55.8°F – 58.6°F
31 days
40" depth
57.7°F
avg
56.3°F – 59.4°F
31 days
Daily Readings
| Date | 2" | 4" | 8" | 20" | 40" |
|---|---|---|---|---|---|
| Dec 1 | 55.2°F | 56.7°F | 58.5°F | 58.6°F | 59.4°F |
| Dec 2 | 54.5°F | 56.3°F | 58.3°F | 58.5°F | 59.2°F |
| Dec 3 | 55°F | 56.3°F | 58.1°F | 58.3°F | 59°F |
| Dec 4 | 53.8°F | 55.6°F | 57.7°F | 58.1°F | 58.6°F |
| Dec 5 | 53.1°F | 55°F | 57.2°F | 57.6°F | 58.3°F |
| Dec 6 | 53.6°F | 55.2°F | 57.2°F | 57.4°F | 58.1°F |
| Dec 7 | 53.6°F | 55.2°F | 57°F | 57.2°F | 57.9°F |
| Dec 8 | 53.6°F | 55.2°F | 57°F | 57.2°F | 57.9°F |
| Dec 9 | 53.6°F | 55.2°F | 56.8°F | 57°F | 57.7°F |
| Dec 10 | 53.2°F | 55°F | 56.8°F | 57°F | 57.7°F |
| Dec 11 | 53.2°F | 54.9°F | 56.7°F | 56.8°F | 57.6°F |
| Dec 12 | 52.9°F | 54.7°F | 56.5°F | 56.7°F | 57.4°F |
| Dec 13 | 52.7°F | 54.5°F | 56.3°F | 56.5°F | 57.4°F |
| Dec 14 | 52.7°F | 54.5°F | 56.3°F | 56.5°F | 57°F |
| Dec 15 | 52.7°F | 54.3°F | 56.1°F | 56.3°F | 57°F |
| Dec 16 | 52.9°F | 54.5°F | 55.9°F | 56.3°F | 56.8°F |
| Dec 17 | 53.2°F | 54.7°F | 56.1°F | 56.3°F | 56.8°F |
| Dec 18 | 54.3°F | 55.2°F | 56.1°F | 56.3°F | 57°F |
| Dec 19 | 55.4°F | 55.9°F | 56.7°F | 56.7°F | 57°F |
| Dec 20 | 55.8°F | 56.3°F | 57°F | 57°F | 57.4°F |
| Dec 21 | 56.5°F | 57°F | 57.4°F | 57.4°F | 57.6°F |
| Dec 22 | 56.8°F | 57.2°F | 57.7°F | 57.6°F | 57.9°F |
| Dec 23 | 56.5°F | 57°F | 57.7°F | 57.7°F | 58.1°F |
| Dec 24 | 57.4°F | 57.6°F | 57.9°F | 57.9°F | 58.3°F |
| Dec 25 | 56.5°F | 57°F | 57.9°F | 57.9°F | 58.3°F |
| Dec 26 | 56.3°F | 56.8°F | 57.9°F | 57.9°F | 58.3°F |
| Dec 27 | 54°F | 55.6°F | 57.6°F | 57.7°F | 58.1°F |
| Dec 28 | 51.4°F | 53.8°F | 56.5°F | 56.8°F | 57.6°F |
| Dec 29 | 51.4°F | 53.4°F | 55.6°F | 56.1°F | 56.8°F |
| Dec 30 | 52.2°F | 53.6°F | 55.4°F | 55.8°F | 56.5°F |
| Dec 31 | 52.7°F | 54.1°F | 55.4°F | 55.8°F | 56.3°F |