Average Soil Temperature in Joliet, IL for September 2026
Data from Shabbona 5 NNE (53.5 mi away) • 25 of 30 days reported
Monthly Summary by Depth
2" depth
67.3°F
avg
61.9°F – 73.4°F
25 days
4" depth
66.2°F
avg
61.9°F – 71.2°F
25 days
8" depth
66.6°F
avg
62.6°F – 71.2°F
25 days
40" depth
65°F
avg
63.1°F – 66.6°F
25 days
Daily Readings
| Date | 2" | 4" | 8" | 40" |
|---|---|---|---|---|
| Sep 1 | 71.6°F | 68.9°F | 68.7°F | 64.8°F |
| Sep 2 | 72.5°F | 70°F | 69.8°F | 65.1°F |
| Sep 3 | 72.9°F | 70.5°F | 70.3°F | 65.5°F |
| Sep 4 | 73.4°F | 70.9°F | 70.9°F | 65.8°F |
| Sep 5 | 73.2°F | 71.2°F | 71.2°F | 66.2°F |
| Sep 6 | 71.6°F | 70.3°F | 70.7°F | 66.4°F |
| Sep 7 | 68.7°F | 68°F | 68.9°F | 66.6°F |
| Sep 8 | 68.4°F | 66.9°F | 67.8°F | 66.2°F |
| Sep 9 | 69.4°F | 67.8°F | 68.2°F | 65.8°F |
| Sep 10 | 68.4°F | 67.5°F | 67.8°F | 65.8°F |
| Sep 11 | 66.7°F | 65.8°F | 66.7°F | 65.7°F |
| Sep 12 | 67.5°F | 66°F | 66.6°F | 65.3°F |
| Sep 13 | 65.3°F | 65.1°F | 66°F | 65.1°F |
| Sep 14 | 61.9°F | 61.9°F | 63.5°F | 64.8°F |
| Sep 15 | 64.6°F | 62.8°F | 63.5°F | 64.2°F |
| Sep 16 | 66°F | 64.6°F | 64.8°F | 63.9°F |
| Sep 17 | 67.1°F | 65.7°F | 65.7°F | 63.9°F |
| Sep 18 | 66.7°F | 65.8°F | 66.2°F | 64°F |
| Sep 19 | 66°F | 65.1°F | 65.7°F | 64.2°F |
| Sep 20 | 66.2°F | 65.7°F | 65.8°F | 65.3°F |
| Sep 21 | 64.4°F | 64.4°F | 65.1°F | 64.8°F |
| Sep 22 | 62.8°F | 63.1°F | 63.9°F | 64.4°F |
| Sep 23 | 62.2°F | 62.2°F | 63°F | 63.9°F |
| Sep 24 | 62.4°F | 62.1°F | 62.6°F | 63.5°F |
| Sep 25 | 62.6°F | 62.2°F | 62.8°F | 63.1°F |