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August Weather in Cape Girardeau, United States

Last updated: June 24, 2025

In August, the average temperature in Cape Girardeau, United States hovers around 25°C (78°F). Expect a refreshing range of minimum temperatures at 13°C (56°F) and maximum peaks reaching 36°C (97°F). During this month, the region experiences approximately 93 mm (3.6 in) of precipitation over 11 days, combined with an average humidity of 76%. Perfect for those who enjoy a warm yet occasionally damp climate!

August Temperature in Cape Girardeau

In August in Cape Girardeau, the average temperature is 25°C (78°F). Maximums can reach 36°C (97°F), and minimums can be as low as 13°C (56°F). This variety in temperatures makes it a great time for travelers to enjoy both warm days and cooler nights.

August Weather in Cape Girardeau: Daily Temperature Highs, Lows, and Averages

The chart illustrates August temperature patterns in Cape Girardeau, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Cape Girardeau, August typically has an average temperature of 25°C (78°F), with highs reaching up to 36°C (97°F) and lows dropping to around 13°C (56°F).
JanFebMarAprMayJunJulAugSepOctNovDec363950576977807773614642
Data source: Temperature data for Cape Girardeau 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 Cape Girardeau

In Cape Girardeau in August, the precipitation amount is 93 mm (3.6 in) over the course of 11 days.

August Precipitation Trends in Cape Girardeau

The chart displays monthly precipitation patterns in Cape Girardeau, 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 Cape Girardeau, August typically receives around 93 mm (3.6 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec1071271641351581029693731299591
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in Cape Girardeau

In Cape Girardeau in August humidity is 76%. With an average temperature of 25°C (78°F), this humidity feels like a thick blanket wrapping around you, making every step feel heavier and the air thick, causing travelers to seek shade and refreshment more often.

August Average Humidity in Cape Girardeau

This chart illustrates the average monthly humidity levels in Cape Girardeau, 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 Cape Girardeau is approximately 76%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%84%84%80%82%83%80%76%75%75%85%88%
Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Cape Girardeau

In Cape Girardeau in August, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Cape Girardeau.

Maximum UV Index Levels in Cape Girardeau for August

The chart shows the monthly maximum UV Index (UVI) for Cape Girardeau 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 Cape Girardeau typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec36710111110109753
Data source: Cape Girardeau 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 Cape Girardeau Compares to Other Months

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

This table compares monthly weather conditions in Cape Girardeau, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather2°C (37°F)107 mm (4.2 inches)86%moderate
February Weather4°C (40°F)127 mm (5.0 inches)84%high
March Weather10°C (50°F)164 mm (6.5 inches)84%high
April Weather14°C (57°F)135 mm (5.3 inches)80%very high
May Weather20°C (69°F)158 mm (6.2 inches)82%extreme
June Weather25°C (77°F)102 mm (4.0 inches)83%extreme
July Weather27°C (81°F)96 mm (3.8 inches)79%very high
August Weather25°C (78°F)93 mm (3.6 inches)76%very high
September Weather23°C (74°F)72 mm (2.9 inches)75%very high
October Weather16°C (61°F)129 mm (5.1 inches)74%high
November Weather8°C (46°F)95 mm (3.7 inches)85%moderate
December Weather6°C (42°F)91 mm (3.6 inches)88%moderate

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