The highest day temperature in April 2025 was 83°F. The lowest night temperature was 25°F. The average values for day and night temperatures during April were 59.7°F и 41.5°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 City is 0.9 in. It makes april one of the most rainy months of the year.

The average wind speed in April is 12.4 mph. It makes April the most windy month of the year for Sioux City.

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 City in April is 7.1 hours.