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