| Month | Ambient temp. (˚C) | Soil temperature (˚C) at depth | |||
| Date | 1 m | 0 m | −1 m | −2 m | −3 m |
| January 15 | 20.0 | 15.5 | 20.9 | 22.5 | 24.2 |
| February 15 | 23.1 | 17.1 | 20.9 | 22.0 | 25.2 |
| March 15 | 27.4 | 26.4 | 22.5 | 22.3 | 25.8 |
| April 15 | 31.6 | 35.6 | 25.8 | 23.8 | 26.6 |
| May 15 | 33.8 | 34.8 | 28.8 | 26.4 | 26.6 |
| June 20 | 31.8 | 34.8 | 30.2 | 28.1 | 29.8 |
| July 20 | 28.7 | 31.9 | 30.0 | 28.4 | 28.5 |
| August 20 | 28.0 | 26.3 | 25.6 | 26.3 | 28.9 |
| September 15 | 28.0 | 27.5 | 26.5 | 26.6 | 25.6 |
| October 11 | 27.7 | 27.6 | 26.0 | 26.7 | 26.1 |
| November 16 | 24.3 | 24.5 | 23.9 | 25.2 | 24.3 |
| December 13 | 21.0 | 20.1 | 22.2 | 24.0 | 24.4 |
| Average Amplitude | 6.9 | 10.0 | 4.6 | 3.2 | 2.8 |