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April Weather in South Milwaukee, United States

Last updated: June 24, 2025

In April, the average temperature in South Milwaukee, United States hovers around 4°C (39°F), with a minimum dipping to -6°C (22°F) and a maximum reaching up to 14°C (58°F). Expect about 112 mm (4.4 in) of precipitation spread across 13 days, contributing to an average humidity of 85%—perfect for those who love a refreshing, cool atmosphere!

April Temperature in South Milwaukee

In April, in South Milwaukee, the average temperature is 4°C (39°F). The maximum can reach 14°C (58°F), while the minimum can drop as low as -6°C (22°F). Travelers should be prepared for chilly conditions and pack accordingly to make the most of their visit.

April Weather in South Milwaukee: Daily Temperature Highs, Lows, and Averages

The chart illustrates April temperature patterns in South Milwaukee, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In South Milwaukee, April typically has an average temperature of 4°C (39°F), with highs reaching up to 14°C (58°F) and lows dropping to around -6°C (22°F).
JanFebMarAprMayJunJulAugSepOctNovDec272734394657687065544034
Data source: Temperature data for South Milwaukee 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 South Milwaukee

In South Milwaukee in April, the precipitation amount is 112 mm (4.4 in) over the course of 13 days.

April Precipitation Trends in South Milwaukee

The chart displays monthly precipitation patterns in South Milwaukee, 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 South Milwaukee, April typically receives around 112 mm (4.4 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec727176112145876160951396763
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in South Milwaukee

In South Milwaukee in April, humidity is 85%. With an average temperature of 4°C (39°F), this humidity feels like a damp chill that seeps into your bones, making traveling uncomfortable and requiring extra layers to ward off the cold and moisture.

April Average Humidity in South Milwaukee

This chart illustrates the average monthly humidity levels in South Milwaukee, 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 South Milwaukee is approximately 85%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%85%85%85%78%80%78%76%79%83%88%82%
Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in South Milwaukee

In South Milwaukee 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 South Milwaukee.

Maximum UV Index Levels in South Milwaukee for April

The chart shows the monthly maximum UV Index (UVI) for South Milwaukee 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 South Milwaukee typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec24589101097532
Data source: South Milwaukee 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 South Milwaukee Compares to Other Months

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

This table compares monthly weather conditions in South Milwaukee, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-3°C (27°F)72 mm (2.8 inches)85%low
February Weather-3°C (28°F)71 mm (2.8 inches)85%moderate
March Weather1°C (34°F)76 mm (3.0 inches)85%moderate
April Weather4°C (39°F)112 mm (4.4 inches)85%very high
May Weather8°C (46°F)145 mm (5.7 inches)78%very high
June Weather14°C (58°F)87 mm (3.4 inches)80%very high
July Weather20°C (68°F)61 mm (2.4 inches)78%very high
August Weather21°C (70°F)60 mm (2.4 inches)76%very high
September Weather18°C (66°F)95 mm (3.7 inches)79%high
October Weather12°C (54°F)139 mm (5.5 inches)83%moderate
November Weather4°C (40°F)67 mm (2.6 inches)88%moderate
December Weather1°C (34°F)63 mm (2.5 inches)81%low

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