Click on a day for an hourly weather forecast
The temperatures in North Dakota in September are comfortable with low of 12°C and and high up to 23°C.
You can expect about 3 to 8 days of rain in North Dakota during the month of September. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Our weather forecast can give you a great sense of what weather to expect in North Dakota in September 2025.
If you’re planning to visit North Dakota in the near future, we highly recommend that you review the 14 day weather forecast for North Dakota before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | -7° / -14° | 4 | 11 | 16 | 31 mm | Awful | North Dakota in January |
| February | -6° / -14° | 3 | 9 | 16 | 31 mm | Awful | North Dakota in February |
| March | 3° / -4° | 6 | 12 | 13 | 53 mm | Awful | North Dakota in March |
| April | 10° / 1° | 6 | 17 | 7 | 75 mm | Bad | North Dakota in April |
| May | 18° / 8° | 8 | 22 | 1 | 122 mm | Ok | North Dakota in May |
| June | 25° / 14° | 7 | 23 | 0 | 132 mm | Good | North Dakota in June |
| July | 29° / 17° | 4 | 27 | 0 | 84 mm | Good | North Dakota in July |
| August | 28° / 16° | 4 | 27 | 0 | 77 mm | Perfect | North Dakota in August |
| September | 23° / 12° | 4 | 26 | 0 | 63 mm | Perfect | North Dakota in September |
| October | 12° / 4° | 4 | 23 | 4 | 60 mm | Bad | North Dakota in October |
| November | 4° / -3° | 3 | 18 | 9 | 24 mm | Awful | North Dakota in November |
| December | -5° / -11° | 3 | 11 | 16 | 40 mm | Awful | North Dakota in December |