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April Weather in Willmar, United States

Last updated: June 24, 2025

In Willmar, United States, the average temperature in April hovers around 6°C (42°F), making it a cool yet intriguing time of year. Be prepared for temperature swings; it can drop as low as -17°C (2°F) or soar up to 30°C (86°F). During this month, you can expect 76 mm (3.0 in) of precipitation spread across approximately 9 days, contributing to an average humidity level of 82%. Embrace the nuances of the season as you explore!

April Temperature in Willmar

In April in Willmar, the average temperature is 6°C (42°F), with a maximum reaching 30°C (86°F) and a minimum dipping as low as -17°C (2°F). This varied climate makes Willmar an exciting destination for travelers looking to experience a wide range of weather conditions.

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

The chart illustrates April temperature patterns in Willmar, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Willmar, April typically has an average temperature of 6°C (42°F), with highs reaching up to 30°C (86°F) and lows dropping to around -17°C (2°F).
JanFebMarAprMayJunJulAugSepOctNovDec151532425872747063473223
Data source: Temperature data for Willmar generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

April Precipitation in Willmar

In Willmar in April, the precipitation amount is 76 mm (3.0 in) spread over a period of 9 days.

April Precipitation Trends in Willmar

The chart displays monthly precipitation patterns in Willmar, 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 Willmar, April typically receives around 76 mm (3.0 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec2022547610792105149115962639
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in Willmar

In Willmar in April, humidity is 82%. With an average temperature of 6°C (42°F), this humidity feels like a damp chill that seeps into your bones, making outdoor activities uncomfortable and prompting travelers to seek cozy indoor spaces instead.

April Average Humidity in Willmar

This chart illustrates the average monthly humidity levels in Willmar, 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 Willmar is approximately 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%89%81%82%76%81%82%83%82%82%87%84%
Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in Willmar

In Willmar in April, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Willmar.

Maximum UV Index Levels in Willmar for April

The chart shows the monthly maximum UV Index (UVI) for Willmar 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 Willmar typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3567910997532
Data source: Willmar 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 Willmar Compares to Other Months

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

This table compares monthly weather conditions in Willmar, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-10°C (15°F)20 mm (0.8 inches)85%moderate
February Weather-10°C (15°F)22 mm (0.9 inches)89%moderate
March Weather0°C (32°F)54 mm (2.1 inches)81%high
April Weather6°C (42°F)76 mm (3.0 inches)82%high
May Weather15°C (59°F)107 mm (4.2 inches)76%very high
June Weather22°C (72°F)92 mm (3.6 inches)81%very high
July Weather23°C (74°F)105 mm (4.1 inches)82%very high
August Weather21°C (70°F)149 mm (5.9 inches)83%very high
September Weather17°C (64°F)115 mm (4.5 inches)82%high
October Weather8°C (47°F)96 mm (3.8 inches)82%moderate
November Weather0°C (33°F)26 mm (1.0 inches)87%moderate
December Weather-5°C (23°F)39 mm (1.5 inches)84%low

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