Average Soil Temperature in Sylmar, CA for December 2025
Data from Stubblefield (75.1 mi away) • 31 of 31 days reported
Monthly Summary by Depth
2" depth
46.1°F
avg
40.8°F – 51.3°F
31 days
4" depth
48.7°F
avg
45.1°F – 52.5°F
31 days
8" depth
50.2°F
avg
47.8°F – 53.4°F
31 days
20" depth
52.9°F
avg
51.6°F – 54.3°F
31 days
40" depth
59.1°F
avg
57.7°F – 61.7°F
31 days
Daily Readings
| Date | 2" | 4" | 8" | 20" | 40" |
|---|---|---|---|---|---|
| Dec 1 | 43°F | 46.9°F | 49.6°F | 54.3°F | 61.7°F |
| Dec 2 | 44.6°F | 47.5°F | 49.3°F | 53.6°F | 61.3°F |
| Dec 3 | 43°F | 46°F | 48.4°F | 53.4°F | 61.2°F |
| Dec 4 | 42.1°F | 45.7°F | 48°F | 52.9°F | 60.8°F |
| Dec 5 | 42.4°F | 45.7°F | 47.8°F | 52.3°F | 60.4°F |
| Dec 6 | 43.7°F | 46.2°F | 47.8°F | 52.2°F | 60.3°F |
| Dec 7 | 44.1°F | 46.6°F | 48°F | 52°F | 59.9°F |
| Dec 8 | 44.1°F | 46.9°F | 48.2°F | 52°F | 59.9°F |
| Dec 9 | 43.2°F | 46.4°F | 48.2°F | 52°F | 59.9°F |
| Dec 10 | 45.3°F | 47.3°F | 48.6°F | 51.8°F | 59°F |
| Dec 11 | 46.6°F | 48.2°F | 49.1°F | 52°F | 59°F |
| Dec 12 | 48.7°F | 50.2°F | 50.2°F | 52.2°F | 59°F |
| Dec 13 | 48.7°F | 50.4°F | 50.7°F | 52.3°F | 58.8°F |
| Dec 14 | 47.3°F | 49.8°F | 50.9°F | 52.9°F | 58.5°F |
| Dec 15 | 45.9°F | 48.7°F | 50.2°F | 52.9°F | 58.5°F |
| Dec 16 | 46.9°F | 49.6°F | 51.3°F | 52.7°F | 58.8°F |
| Dec 17 | 49.8°F | 51.8°F | 52.3°F | 52.9°F | 58.5°F |
| Dec 18 | 46.6°F | 50.2°F | 52.7°F | 53.4°F | 58.5°F |
| Dec 19 | 45.9°F | 49.5°F | 51.8°F | 53.4°F | 58.5°F |
| Dec 20 | 48.7°F | 50.9°F | 52.3°F | 53.4°F | 58.8°F |
| Dec 21 | 51.1°F | 52.5°F | 53.4°F | 53.8°F | 58.5°F |
| Dec 22 | 48.4°F | 51.3°F | 53.1°F | 54.1°F | 58.5°F |
| Dec 23 | 51.3°F | 52.3°F | 53.1°F | 54.1°F | 58.5°F |
| Dec 24 | 48.2°F | 50.7°F | 52.3°F | 54.1°F | 58.5°F |
| Dec 25 | 49.1°F | 50.4°F | 51.3°F | 53.6°F | 58.5°F |
| Dec 26 | 44.1°F | 48.6°F | 50.9°F | 53.4°F | 58.5°F |
| Dec 27 | 45.1°F | 47.8°F | 49.6°F | 52.9°F | 58.5°F |
| Dec 28 | 43°F | 46.9°F | 49.1°F | 52.5°F | 58.3°F |
| Dec 29 | 40.8°F | 45.1°F | 48.2°F | 52°F | 57.9°F |
| Dec 30 | 47.8°F | 49.1°F | 49.5°F | 51.6°F | 57.9°F |
| Dec 31 | 48.6°F | 50°F | 50.5°F | 52.2°F | 57.7°F |