| Month/Grand Fork | Av. max temp | Av. min temp | Av. soil temp | Total solar radiation | Total PET | Rainfall |
| Apr-11 | 10.1 | 0.8 | 5.0 | 377 | 85.9 | 72.6 |
| May-11 | 17.3 | 6.1 | 11.7 | 408 | 135.6 | 75.4 |
| Jun-11 | 23.4 | 12.9 | 17.6 | 468 | 166.9 | 73.4 |
| Jul-11 | 27.9 | 15.7 | 22.4 | 538 | 177.0 | 93.0 |
| Aug-11 | 26.7 | 13.4 | 21.7 | 460 | 156.7 | 55.6 |
| Sep-11 | 22.0 | 6.7 | 16.7 | 369 | 123.7 | 31.2 |