April Weather in Iowa, United States

Last updated: June 24, 2025

In April, the average temperature in Iowa, United States is a pleasant 20°C (69°F). Temperatures can range from a cool 3°C (37°F) to a warm 31°C (89°F). Expect about 155 mm (6.1 in) of precipitation spread over 11 days, while the air tends to be quite humid at an average of 80%.

April Temperature in Iowa

In April in Iowa, the average temperature is 20°C (69°F). Maximum temperatures can reach 31°C (89°F), while minimums can drop as low as 3°C (37°F). This mild climate makes Iowa an ideal destination for travelers seeking pleasant weather during their visit.

April Weather in Iowa: Daily Temperature Highs, Lows, and Averages

The chart illustrates April temperature patterns in Iowa, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Iowa, April typically has an average temperature of 20°C (69°F), with highs reaching up to 31°C (89°F) and lows dropping to around 3°C (37°F).

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

April Precipitation in Iowa

In Iowa in April, the total precipitation amount is 155 mm (6.1 in) distributed over a span of 11 days.

April Precipitation Trends in Iowa

The chart displays monthly precipitation patterns in Iowa, 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 Iowa, April typically receives around 155 mm (6.1 inches) of precipitation spread over approximately 11 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 Iowa

In Iowa in April, humidity is 80%. With an average temperature of 20°C (69°F), this humidity feels like a warm blanket enveloping you, making every step slightly more challenging as you navigate the air that clings to your skin, often leaving you longing for a cool breeze while exploring the sights.

April Average Humidity in Iowa

This chart illustrates the average monthly humidity levels in Iowa, 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 Iowa is approximately 80%, 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 Iowa

In Iowa in April, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Iowa.

Maximum UV Index Levels in Iowa for April

The chart shows the monthly maximum UV Index (UVI) for Iowa 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 Iowa typically reaches 10, which falls under the very high exposure category.

Data source: Iowa 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 Iowa Compares to Other Months

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

This table compares monthly weather conditions in Iowa, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	12°C (53°F)	117 mm (4.6 inches)	81%	moderate
February Weather	14°C (58°F)	107 mm (4.2 inches)	81%	very high
March Weather	18°C (65°F)	70 mm (2.7 inches)	79%	very high
April Weather	20°C (69°F)	155 mm (6.1 inches)	80%	very high
May Weather	25°C (77°F)	193 mm (7.6 inches)	81%	extreme
June Weather	27°C (81°F)	163 mm (6.4 inches)	76%	extreme
July Weather	28°C (83°F)	158 mm (6.2 inches)	73%	extreme
August Weather	28°C (83°F)	179 mm (7.1 inches)	71%	extreme
September Weather	26°C (80°F)	163 mm (6.4 inches)	72%	very high
October Weather	22°C (72°F)	122 mm (4.8 inches)	73%	very high
November Weather	16°C (60°F)	75 mm (2.9 inches)	83%	high
December Weather	14°C (57°F)	119 mm (4.7 inches)	88%	moderate