Average Soil Temperature in Northbrook, IL — March 2026
Data from Shabbona 5 NNE (55.2 mi away) • 30 of 31 days reported
Monthly Summary by Depth
2" depth
36.8°F
avg
31.1°F – 48.2°F
30 days
4" depth
36.6°F
avg
31.1°F – 46.6°F
30 days
8" depth
36.5°F
avg
31.6°F – 45.5°F
30 days
40" depth
37.8°F
avg
35.6°F – 41.5°F
30 days
Daily Readings
| Date | 2" | 4" | 8" | 40" |
|---|---|---|---|---|
| Mar 1 | 31.3°F | 31.1°F | 31.6°F | 35.8°F |
| Mar 2 | 31.1°F | 31.1°F | 31.6°F | 35.8°F |
| Mar 3 | 31.5°F | 31.1°F | 31.6°F | 35.8°F |
| Mar 4 | 31.6°F | 31.3°F | 31.6°F | 35.8°F |
| Mar 5 | 31.6°F | 31.3°F | 31.6°F | 35.8°F |
| Mar 6 | 32.7°F | 31.3°F | 31.8°F | 35.8°F |
| Mar 7 | 33.8°F | 32.5°F | 32.2°F | 35.6°F |
| Mar 8 | 33.3°F | 33.1°F | 32.7°F | 35.6°F |
| Mar 9 | 35.2°F | 34.3°F | 33.4°F | 35.8°F |
| Mar 10 | 37.6°F | 37°F | 35.4°F | 35.8°F |
| Mar 11 | 37°F | 37.8°F | 37.4°F | 36.1°F |
| Mar 12 | 35.4°F | 36.3°F | 36.5°F | 36.9°F |
| Mar 13 | 36.5°F | 36.7°F | 36.7°F | 37.2°F |
| Mar 14 | 35.2°F | 35.8°F | 36.1°F | 37.6°F |
| Mar 15 | 36.5°F | 36.1°F | 36.1°F | 37.8°F |
| Mar 16 | 34.5°F | 35.6°F | 36.1°F | 37.9°F |
| Mar 17 | 33.1°F | 34.3°F | 34.9°F | 37.9°F |
| Mar 18 | 32.7°F | 33.8°F | 34.3°F | 37.9°F |
| Mar 19 | 34.3°F | 34.5°F | 34.7°F | 37.8°F |
| Mar 20 | 39.4°F | 37.8°F | 37.2°F | 37.8°F |
| Mar 21 | 42.6°F | 41°F | 39.9°F | 38.1°F |
| Mar 22 | 42.8°F | 42.4°F | 41.7°F | 39°F |
| Mar 23 | 39.6°F | 39.9°F | 40.3°F | 39.7°F |
| Mar 24 | 38.3°F | 38.7°F | 39°F | 40.1°F |
| Mar 25 | 40.5°F | 39.6°F | 39.4°F | 39.9°F |
| Mar 26 | 43.5°F | 42.4°F | 41.7°F | 40.1°F |
| Mar 27 | 40.8°F | 41.4°F | 41.5°F | 40.6°F |
| Mar 28 | 39.2°F | 39.7°F | 40.1°F | 41°F |
| Mar 30 | 45.1°F | 43.2°F | 42.4°F | 41.2°F |
| Mar 31 | 48.2°F | 46.6°F | 45.5°F | 41.5°F |