Average Soil Temperature in Salem, OR — September 2025
Data from Corvallis 10 SSW (39.9 mi away) • 29 of 30 days reported
Monthly Summary by Depth
2" depth
72.7°F
avg
61.7°F – 82.2°F
29 days
4" depth
70.8°F
avg
63°F – 78.1°F
29 days
8" depth
70.9°F
avg
65.1°F – 76.3°F
29 days
20" depth
70.8°F
avg
67.1°F – 74.5°F
29 days
40" depth
69.2°F
avg
67.3°F – 70.5°F
29 days
Daily Readings
| Date | 2" | 4" | 8" | 20" | 40" |
|---|---|---|---|---|---|
| Sep 1 | 79.3°F | 75.7°F | 74.8°F | 73.9°F | 70.5°F |
| Sep 2 | 80.2°F | 76.1°F | 75°F | 73.8°F | 70.3°F |
| Sep 3 | 79.9°F | 76.8°F | 75.6°F | 73.9°F | 70.3°F |
| Sep 4 | 81°F | 77.2°F | 75.6°F | 73.9°F | 70.3°F |
| Sep 5 | 82.2°F | 78.1°F | 76.3°F | 74.3°F | 70.3°F |
| Sep 6 | 78.6°F | 76.3°F | 75.7°F | 74.5°F | 70.3°F |
| Sep 7 | 79.9°F | 76.3°F | 75.2°F | 74.1°F | 70.3°F |
| Sep 8 | 75.4°F | 74.3°F | 74.7°F | 73.9°F | 70.3°F |
| Sep 9 | 73.4°F | 72.7°F | 73.2°F | 73.2°F | 70.3°F |
| Sep 10 | 71.4°F | 71.1°F | 72°F | 72.7°F | 70.2°F |
| Sep 11 | 69.1°F | 69.4°F | 70.7°F | 71.8°F | 70.2°F |
| Sep 12 | 69.4°F | 69.1°F | 69.8°F | 70.9°F | 70°F |
| Sep 13 | 70.7°F | 69.3°F | 69.4°F | 70.3°F | 69.8°F |
| Sep 14 | 71.4°F | 70.2°F | 70.3°F | 70.3°F | 69.4°F |
| Sep 15 | 68.7°F | 67.8°F | 69.1°F | 70°F | 69.3°F |
| Sep 16 | 70.7°F | 68.5°F | 68.9°F | 69.4°F | 68.9°F |
| Sep 17 | 72°F | 69.6°F | 69.4°F | 69.4°F | 68.9°F |
| Sep 18 | 72°F | 69.6°F | 69.6°F | 69.4°F | 68.7°F |
| Sep 19 | 72.1°F | 69.6°F | 69.6°F | 69.4°F | 68.5°F |
| Sep 20 | 71.8°F | 69.6°F | 69.6°F | 69.4°F | 68.4°F |
| Sep 21 | 71.1°F | 69.1°F | 69.4°F | 69.4°F | 68.2°F |
| Sep 22 | 69.6°F | 67.6°F | 68.5°F | 69.1°F | 68.2°F |
| Sep 23 | 70.9°F | 68.4°F | 68.4°F | 68.7°F | 68.2°F |
| Sep 24 | 72°F | 69.3°F | 68.9°F | 68.7°F | 68°F |
| Sep 25 | 71.2°F | 69.1°F | 69.1°F | 68.7°F | 67.8°F |
| Sep 27 | 68.7°F | 67.3°F | 67.8°F | 68.4°F | 67.6°F |
| Sep 28 | 68.7°F | 67.3°F | 67.5°F | 68°F | 67.5°F |
| Sep 29 | 66.2°F | 66.2°F | 67.3°F | 68°F | 67.5°F |
| Sep 30 | 61.7°F | 63°F | 65.1°F | 67.1°F | 67.3°F |