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August Weather in Sun Prairie, United States

Last updated: June 24, 2025

In Sun Prairie, United States, the average temperature in August is a pleasant 21°C (69°F). However, be prepared for a temperature range, with a minimum of 4°C (40°F) and highs reaching up to 39°C (103°F). Expect 24 mm (0.9 in) of precipitation spread over 4 days, while humidity lingers at a moderate 71%.

August Temperature in Sun Prairie

In August in Sun Prairie, the average temperature is 21°C (69°F). The maximum can reach 39°C (103°F), while the minimum can be as low as 4°C (40°F). Be prepared for a warm climate with occasional chilly nights, making it a great time to explore the diverse outdoor activities available.

August Weather in Sun Prairie: Daily Temperature Highs, Lows, and Averages

The chart illustrates August temperature patterns in Sun Prairie, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sun Prairie, August typically has an average temperature of 21°C (69°F), with highs reaching up to 39°C (103°F) and lows dropping to around 4°C (40°F).
JanFebMarAprMayJunJulAugSepOctNovDec261933425463726959443629
Data source: Temperature data for Sun Prairie 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 Sun Prairie

In Sun Prairie in August, the precipitation amount is 24 mm (0.9 in) over a period of 4 days.

August Precipitation Trends in Sun Prairie

The chart displays monthly precipitation patterns in Sun Prairie, 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 Sun Prairie, August typically receives around 24 mm (0.9 inches) of precipitation spread over approximately 4 days.
JanFebMarAprMayJunJulAugSepOctNovDec153925597177122438372926
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in Sun Prairie

In Sun Prairie in August, humidity is 71%. With an average temperature of 21°C (69°F), this humidity feels like a warm embrace, wrapping around you as you explore the sights, making it essential to stay hydrated and take breaks in shaded areas.

August Average Humidity in Sun Prairie

This chart illustrates the average monthly humidity levels in Sun Prairie, 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 Sun Prairie is approximately 71%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%88%83%78%76%78%77%71%68%72%84%91%
Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Sun Prairie

In Sun Prairie 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 Sun Prairie.

Maximum UV Index Levels in Sun Prairie for August

The chart shows the monthly maximum UV Index (UVI) for Sun Prairie 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 Sun Prairie typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2457910997532
Data source: Sun Prairie 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 Sun Prairie Compares to Other Months

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

This table compares monthly weather conditions in Sun Prairie, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-4°C (26°F)15 mm (0.6 inches)87%low
February Weather-7°C (19°F)39 mm (1.6 inches)88%moderate
March Weather1°C (34°F)25 mm (1.0 inches)83%moderate
April Weather5°C (42°F)59 mm (2.3 inches)78%high
May Weather12°C (54°F)71 mm (2.8 inches)76%very high
June Weather17°C (64°F)77 mm (3.0 inches)78%very high
July Weather22°C (72°F)12 mm (0.5 inches)77%very high
August Weather21°C (69°F)24 mm (0.9 inches)71%very high
September Weather15°C (59°F)38 mm (1.5 inches)68%high
October Weather7°C (44°F)37 mm (1.5 inches)72%moderate
November Weather2°C (36°F)29 mm (1.2 inches)84%moderate
December Weather-2°C (29°F)26 mm (1.0 inches)90%low

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