Best Time to Visit Sioux Falls: Month-by-Month Guide
Best months for Sioux Falls: September, July, August.
- Best months for Sioux Falls: September, July, August.
- Peak season is July, August, June. Expect higher prices and more visitors (estimated from the climate, not from visitor counts).
- Shoulder season: May, September, October. Good weather without the busiest period.
- Wettest months: May, June, April.
- The least pleasant month is December (score 4.4).
Year at a glance
Weather by month
| Month | Avg high | Avg low | Rainfall | Rainy days | Humidity | Sunshine | Score |
|---|---|---|---|---|---|---|---|
| January | -3°C | -12°C | 20 mm | 5 | – | – | 4.5 |
| February | 0°C | -10°C | 24 mm | 5 | – | – | 4.4 |
| March | 7°C | -4°C | 47 mm | 7 | – | – | 5.5 |
| April | 15°C | 3°C | 90 mm | 10 | – | – | 6.5 |
| May | 21°C | 10°C | 114 mm | 13 | – | – | 7.1 |
| June | 27°C | 16°C | 131 mm | 12 | – | – | 7.2 |
| July | 29°C | 18°C | 84 mm | 9 | – | – | 7.9 |
| August | 27°C | 16°C | 84 mm | 9 | – | – | 7.9 |
| September | 24°C | 12°C | 81 mm | 8 | – | – | 8.0 |
| October | 16°C | 4°C | 61 mm | 7 | – | – | 7.1 |
| November | 7°C | -3°C | 40 mm | 6 | – | – | 5.5 |
| December | -1°C | -9°C | 27 mm | 5 | – | – | 4.4 |
Frequently asked questions
When is the best time to visit Sioux Falls?
The best months are September, July, August.
When is the rainy season in Sioux Falls?
The wettest months are May, June, April.