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April Weather in Waukesha, United States

Last updated: June 24, 2025

In April, the average temperature in Waukesha, United States is a cool 7°C (46°F). Expect a chilly minimum of -8°C (17°F) and the potential for warmth with a maximum of 27°C (81°F). During this month, 109 mm (4.3 in) of precipitation is recorded over approximately 13 days, contributing to an average humidity of 85%.

April Temperature in Waukesha

In April in Waukesha, the average temperature is 7°C (46°F). The maximum can reach 27°C (81°F), while the minimum can be as low as -8°C (17°F). Overall, be prepared for a wide range of temperatures when traveling to Waukesha during this time.

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

The chart illustrates April temperature patterns in Waukesha, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Waukesha, April typically has an average temperature of 7°C (46°F), with highs reaching up to 27°C (81°F) and lows dropping to around -8°C (17°F).
JanFebMarAprMayJunJulAugSepOctNovDec232536455869747265523730
Data source: Temperature data for Waukesha 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 Waukesha

In Waukesha in April, the precipitation amount is 109 mm (4.3 in), which occurs during 13 days.

April Precipitation Trends in Waukesha

The chart displays monthly precipitation patterns in Waukesha, 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 Waukesha, April typically receives around 109 mm (4.3 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec5753621091341059282991114748
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in Waukesha

In Waukesha in April humidity is 85%. With an average temperature of 7°C (46°F), this humidity feels like a damp chill that seeps into your bones, making outdoor exploration feel much colder than it actually is.

April Average Humidity in Waukesha

This chart illustrates the average monthly humidity levels in Waukesha, 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 Waukesha 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 Waukesha

In Waukesha 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 Waukesha.

Maximum UV Index Levels in Waukesha for April

The chart shows the monthly maximum UV Index (UVI) for Waukesha 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 Waukesha typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec34589101097532
Data source: Waukesha 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 Waukesha Compares to Other Months

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

This table compares monthly weather conditions in Waukesha, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-5°C (23°F)57 mm (2.2 inches)85%moderate
February Weather-4°C (25°F)53 mm (2.1 inches)85%moderate
March Weather2°C (36°F)62 mm (2.5 inches)85%moderate
April Weather7°C (46°F)109 mm (4.3 inches)85%very high
May Weather14°C (58°F)134 mm (5.3 inches)78%very high
June Weather21°C (69°F)105 mm (4.1 inches)80%very high
July Weather23°C (75°F)92 mm (3.6 inches)78%very high
August Weather22°C (72°F)82 mm (3.2 inches)76%very high
September Weather19°C (66°F)99 mm (3.9 inches)79%high
October Weather11°C (52°F)111 mm (4.4 inches)83%moderate
November Weather3°C (38°F)47 mm (1.8 inches)88%moderate
December Weather-1°C (31°F)48 mm (1.9 inches)81%low

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