| Month/Mchenry | Av. max temp | Av. min temp | Av. soil temp | Total solar radiation | Total PET | Rainfall |
| Apr-09 | 8.3 | −1.0 | 3.2 | 418 | 107.2 | 45.0 |
| May-09 | 17.0 | 3.9 | 10.7 | 538 | 194.6 | 48.8 |
| Jun-09 | 22.1 | 10.3 | 18.4 | 529 | 193.5 | 29.5 |
| Jul-09 | 24.1 | 12.3 | 21.8 | 584 | 228.1 | 32.5 |
| Aug-09 | 24.3 | 12.8 | 19.8 | 434 | 167.4 | 81.8 |
| Sep-09 | 23.8 | 11.6 | 18.3 | 395 | 149.1 | 112.8 |