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August Weather in Waukesha, United States

Last updated: June 24, 2025

In August, the average temperature in Waukesha, United States is a pleasant 22°C (72°F). Expect minimums dipping to 9°C (48°F) and soaring highs of 35°C (95°F). With an average humidity of 76%, the atmosphere can feel quite warm. During this month, anticipate 82 mm (3.2 in) of precipitation spread over about 10 days, making it a dynamic time to experience the local climate.

August Temperature in Waukesha

In August, in Waukesha, the average temperature is 22°C (72°F). The maximum can reach 35°C (95°F), while the minimum can be as low as 9°C (48°F). This makes it a comfortable time to visit, ideal for outdoor activities and exploring the local sights.

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

The chart illustrates August 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, August typically has an average temperature of 22°C (72°F), with highs reaching up to 35°C (95°F) and lows dropping to around 9°C (48°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.

August Precipitation in Waukesha

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

August Precipitation Trends in Waukesha

The chart displays monthly precipitation patterns in Waukesha, with values for each month alongside August’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how August’s conditions compare to those of other months. In Waukesha, August typically receives around 82 mm (3.2 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec5753621091341059282991114748
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in Waukesha

In Waukesha in August humidity is 76%. With an average temperature of 22°C (72°F), this humidity feels like a warm embrace, making travel slightly uncomfortable as you navigate through the thick, saturated air.

August Average Humidity in Waukesha

This chart illustrates the average monthly humidity levels in Waukesha, with August’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In August, average humidity in Waukesha is approximately 76%, 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 August generated using information from the Copernicus Climate Change Service.

August UV Index in Waukesha

In Waukesha in August, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Waukesha.

Maximum UV Index Levels in Waukesha for August

The chart shows the monthly maximum UV Index (UVI) for Waukesha in August, 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 August, the maximum UV index in Waukesha typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec34589101097532
Data source: Waukesha August 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 August 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 August’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 August’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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