Mandan Climate: Weather by Month and Best Time to Visit
Best months for Mandan: September, August, July.
Year at a glance
Weather by month
| Month | Avg high | Avg low | Rainfall | Rainy days | Humidity | Sunshine | Score |
|---|---|---|---|---|---|---|---|
| January | -5°C | -14°C | 16 mm | 4 | – | – | 4.5 |
| February | -2°C | -12°C | 18 mm | 4 | – | – | 4.5 |
| March | 5°C | -6°C | 27 mm | 5 | – | – | 5.0 |
| April | 13°C | 0°C | 47 mm | 8 | – | – | 6.4 |
| May | 20°C | 7°C | 75 mm | 10 | – | – | 7.4 |
| June | 25°C | 13°C | 95 mm | 11 | – | – | 7.5 |
| July | 28°C | 16°C | 78 mm | 10 | – | – | 7.8 |
| August | 28°C | 14°C | 57 mm | 8 | – | – | 8.1 |
| September | 23°C | 9°C | 45 mm | 7 | – | – | 8.2 |
| October | 14°C | 2°C | 45 mm | 6 | – | – | 6.8 |
| November | 4°C | -5°C | 21 mm | 4 | – | – | 5.2 |
| December | -3°C | -11°C | 18 mm | 4 | – | – | 4.5 |