| Month | Weather Stations | Average 2009 Temperature | Normal Temperature | Average 2009 Precipitation | Normal Precipitation |
|
|
| (˚C) | (˚C) | (mm) | (mm) |
| September | Mandan | 18 | 14 | 53 | 39 |
|
| Carrington | 17 | 14 | 55 | 49 |
|
| Minot | 18 | 14 | 100 | 37 |
|
| Fargo | 18 | 15 | 50 | 65 |
|
| Grand Forks | 18 | 14 | 34 | 52 |
|
| Edgeley | 17 | 15 | 57 | 62 |
|
| Hettinger | 17 | 14 | 14 | 37 |
| October | Mandan | 3 | 7 | 69 | 35 |
|
| Carrington | 3 | 7 | 77 | 45 |
|
| Minot | 3 | 6 | 46 | 36 |
|
| Fargo | 4 | 8 | 137 | 55 |
|
| Grand Forks | 4 | 6 | 89 | 50 |
|
| Edgeley | 4 | 7 | 110 | 43 |
|
| Hettinger | 3 | 7 | 59 | 35 |