Average Soil Temperature in Springfield, IL — September 2025
Data from Mason #1 (38.1 mi away) • 30 of 30 days reported
Monthly Summary by Depth
2" depth
70.1°F
avg
65.8°F – 74.3°F
30 days
4" depth
69.7°F
avg
66°F – 73°F
30 days
8" depth
72°F
avg
68.9°F – 75°F
30 days
20" depth
70.4°F
avg
68.5°F – 72°F
30 days
40" depth
70.6°F
avg
69.6°F – 72.3°F
30 days
Daily Readings
| Date | 2" | 4" | 8" | 20" | 40" |
|---|---|---|---|---|---|
| Sep 1 | 70.7°F | 70.7°F | 73.4°F | 72°F | 72.3°F |
| Sep 2 | 70.7°F | 70.3°F | 72.7°F | 71.6°F | 71.8°F |
| Sep 3 | 71.1°F | 70.7°F | 72.7°F | 71.4°F | 71.8°F |
| Sep 4 | 68.5°F | 68.5°F | 71.1°F | 70.7°F | 71.4°F |
| Sep 5 | 68.2°F | 68.2°F | 70.3°F | 70.2°F | 71.4°F |
| Sep 6 | 66.7°F | 67.1°F | 69.6°F | 69.6°F | 71.1°F |
| Sep 7 | 65.8°F | 66°F | 68.9°F | 68.9°F | 70.7°F |
| Sep 8 | 66°F | 66°F | 68.9°F | 68.5°F | 70.3°F |
| Sep 9 | 67.5°F | 67.1°F | 69.3°F | 68.5°F | 70°F |
| Sep 10 | 69.3°F | 68.5°F | 70.3°F | 68.9°F | 70°F |
| Sep 11 | 70°F | 69.3°F | 71.8°F | 69.4°F | 70°F |
| Sep 12 | 71.4°F | 70.3°F | 72.7°F | 70°F | 70°F |
| Sep 13 | 73.4°F | 72.3°F | 73.9°F | 70.7°F | 70°F |
| Sep 14 | 74.3°F | 73°F | 75°F | 71.4°F | 70°F |
| Sep 15 | 73.4°F | 72.7°F | 74.7°F | 72°F | 70.3°F |
| Sep 16 | 72.3°F | 71.8°F | 73.9°F | 71.8°F | 70.7°F |
| Sep 17 | 71.4°F | 71.4°F | 73.4°F | 71.4°F | 70.7°F |
| Sep 18 | 72.3°F | 71.4°F | 74.3°F | 71.2°F | 70.7°F |
| Sep 19 | 72.3°F | 71.4°F | 73.4°F | 71.4°F | 70.7°F |
| Sep 20 | 71.8°F | 71.1°F | 73°F | 71.2°F | 70.7°F |
| Sep 21 | 72.7°F | 71.8°F | 73.4°F | 71.4°F | 70.7°F |
| Sep 22 | 71.8°F | 71.4°F | 73.4°F | 71.4°F | 70.7°F |
| Sep 23 | 71.4°F | 70.7°F | 72.7°F | 71.1°F | 70.7°F |
| Sep 24 | 70°F | 69.6°F | 71.8°F | 70.9°F | 70.7°F |
| Sep 25 | 67.8°F | 68.2°F | 70.7°F | 70.2°F | 70.3°F |
| Sep 26 | 67.8°F | 67.8°F | 70.3°F | 69.4°F | 70.3°F |
| Sep 27 | 67.8°F | 67.8°F | 70.7°F | 69.3°F | 70°F |
| Sep 28 | 67.8°F | 68.2°F | 70.3°F | 69.1°F | 69.6°F |
| Sep 29 | 68.5°F | 68.5°F | 71.1°F | 69.1°F | 69.6°F |
| Sep 30 | 69.3°F | 68.9°F | 71.4°F | 69.3°F | 69.6°F |