| Month/Grand Fork | Av. max temp | Av. min temp | Av. soil temp | Total solar radiation | Total PET | Rainfall |
| Apr-10 | 17.2 | 3.3 | 9.5 | 408 | 145.0 | 24.6 |
| May-10 | 19.3 | 7.9 | 13.7 | 429 | 154.2 | 121.2 |
| Jun-10 | 23.2 | 12.2 | 18.9 | 467 | 133.1 | 87.9 |
| Jul-10 | 28.1 | 14.5 | 23.9 | 542 | 174.5 | 53.1 |
| Aug-10 | 28.8 | 14.2 | 24.4 | 457 | 180.8 | 43.7 |
| Sep-10 | 18.5 | 7.4 | 14.3 | 290 | 99.1 | 143.5 |