The highest day temperature in April 2026 was 90°F. The lowest night temperature was 18°F. The average values for day and night temperatures during April were 58.0°F и 39.9°F respectivly.

You can expect various weather conditions during April. Be ready for sunny, cloudy or even gloomy days.

Precipitation total in April for Sioux Falls is 0.7 in. It makes april one of the most rainy months of the year.

The average wind speed in April is 12.2 mph. It makes April the most windy month of the year for Sioux Falls.

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Sioux Falls in April is 7.2 hours.