April Weather in Sioux Falls, United States

Last updated: June 24, 2025

In April, the average temperature in Sioux Falls, United States hovers around 7°C (45°F). While the climate can be quite variable, be prepared for minimums as low as -17°C (1°F) and occasional highs reaching 29°C (85°F). Expect about 82 mm (3.2 in) of precipitation spread over 10 days, contributing to an average humidity of 79%. Bring your layers and an umbrella!

April Temperature in Sioux Falls

In April in Sioux Falls, the average temperature is 7°C (45°F). Maximums can reach 29°C (85°F), while minimums can dip as low as -17°C (1°F). Be prepared for a wide range of temperatures during your travels!

April Weather in Sioux Falls: Daily Temperature Highs, Lows, and Averages

The chart illustrates April temperature patterns in Sioux Falls, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sioux Falls, April typically has an average temperature of 7°C (45°F), with highs reaching up to 29°C (85°F) and lows dropping to around -17°C (1°F).

Data source: Temperature data for Sioux Falls generated using information from the Copernicus Climate Change Service.

April Precipitation in Sioux Falls

In Sioux Falls in April, the total precipitation amount is 82 mm (3.2 in) observed over a span of 10 days.

April Precipitation Trends in Sioux Falls

The chart displays monthly precipitation patterns in Sioux Falls, with values for each month alongside April’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how April’s conditions compare to those of other months. In Sioux Falls, April typically receives around 82 mm (3.2 inches) of precipitation spread over approximately 10 days.

Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

April Humidity in Sioux Falls

In Sioux Falls in April humidity is 79%. With an average temperature of 7°C (45°F), this humidity feels like a damp chill wrapping around you, making outdoor explorations uncomfortable and requiring extra layers for warmth while you navigate through the misty air.

April Average Humidity in Sioux Falls

This chart illustrates the average monthly humidity levels in Sioux Falls, with April’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In April, average humidity in Sioux Falls is approximately 79%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in Sioux Falls

In Sioux Falls in April, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Sioux Falls.

Maximum UV Index Levels in Sioux Falls for April

The chart shows the monthly maximum UV Index (UVI) for Sioux Falls in April, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In April, the maximum UV index in Sioux Falls typically reaches 8, which falls under the very high exposure category.

Data source: Sioux Falls April UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

How April Weather in Sioux Falls Compares to Other Months

Weather in Sioux Falls varies notably across the year, with each month offering distinct climate conditions. This page compares April’s weather to other months in Sioux Falls, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Sioux Falls, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-7°C (20°F)	21 mm (0.8 inches)	80%	low
February Weather	-7°C (20°F)	24 mm (0.9 inches)	84%	moderate
March Weather	2°C (35°F)	65 mm (2.6 inches)	75%	moderate
April Weather	7°C (45°F)	82 mm (3.2 inches)	79%	very high
May Weather	15°C (59°F)	128 mm (5.0 inches)	74%	very high
June Weather	23°C (73°F)	85 mm (3.3 inches)	81%	extreme
July Weather	24°C (75°F)	77 mm (3.0 inches)	82%	very high
August Weather	22°C (72°F)	94 mm (3.7 inches)	80%	very high
September Weather	18°C (65°F)	107 mm (4.2 inches)	75%	very high
October Weather	9°C (48°F)	79 mm (3.1 inches)	77%	moderate
November Weather	1°C (35°F)	25 mm (1.0 inches)	85%	moderate
December Weather	-3°C (26°F)	39 mm (1.5 inches)	83%	low