Mandan in May
7.4out of 10
Possible, with caveats
Mild: highs around 20°C. Frequent rain: about 10 rainy days.
20°CAvg high
7°CAvg low
10Rainy days (75 mm)
14:50 hDaylight
06:15Sunrise · 21:05 Sunset
Why this score
- Mild: highs around 20°C
- Frequent rain: about 10 rainy days
What to wear and pack
- Layers you can add or remove
- Rain jacket or compact umbrella
How reliable is the forecast?
Rain in May varies a lot between years (±3.5 rainy days), so check the forecast closer to your trip. Averages cover 30 years (1991–2020). Individual days can differ a lot.
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 |
Frequently asked questions
How hot is Mandan in May?
Daytime highs average 20°C and nights about 7°C.
When is the best time to visit Mandan?
The best months are September, August, July.