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December Weather in Cape Girardeau, United States

Last updated: June 24, 2025

In Cape Girardeau, United States, the average temperature in December hovers around 6°C (42°F). However, expect a range of conditions, with minimums dipping to -13°C (9°F) and maximums reaching up to 23°C (74°F). Precipitation is notable, with about 91 mm (3.6 in) expected over 8 days, contributing to an average humidity level of 88%. Be prepared for a mix of weather!

December Temperature in Cape Girardeau

In December in Cape Girardeau, the average temperature is 6°C (42°F). Maximum temperatures can reach 23°C (74°F), while minimums can drop as low as -13°C (9°F). Be prepared for a wide range of temperatures when traveling to Cape Girardeau this month.

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

The chart illustrates December 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, December typically has an average temperature of 6°C (42°F), with highs reaching up to 23°C (74°F) and lows dropping to around -13°C (9°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.

December Precipitation in Cape Girardeau

In Cape Girardeau in December, the total precipitation amount is 91 mm (3.6 in) over the course of 8 days.

December Precipitation Trends in Cape Girardeau

The chart displays monthly precipitation patterns in Cape Girardeau, with values for each month alongside December’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how December’s conditions compare to those of other months. In Cape Girardeau, December typically receives around 91 mm (3.6 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec1071271641351581029693731299591
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Cape Girardeau

In Cape Girardeau in December, humidity is 88%. With an average temperature of 6°C (42°F), this humidity feels like a damp chill that seeps into your bones, making traveling uncomfortable as the cold air clings to your skin and saps your energy.

December Average Humidity in Cape Girardeau

This chart illustrates the average monthly humidity levels in Cape Girardeau, with December’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In December, average humidity in Cape Girardeau is approximately 88%, 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 December generated using information from the Copernicus Climate Change Service.

December UV Index in Cape Girardeau

In Cape Girardeau in December, the maximum UV index is 3, which corresponds to a moderate Exposure Category. The time to burn is approximately 30 minutes. For more details on the hourly UV index in Cape Girardeau, you can check the information here.

Maximum UV Index Levels in Cape Girardeau for December

The chart shows the monthly maximum UV Index (UVI) for Cape Girardeau in December, 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 December, the maximum UV index in Cape Girardeau typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec36710111110109753
Data source: Cape Girardeau December 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 December 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 December’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 December’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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