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December Weather in Keokuk, United States

Last updated: June 24, 2025

In Keokuk, United States, the average temperature in December hovers around 1°C (35°F). Expect a chilly range where the temperature can dip as low as -21°C (-5°F) and rise to a pleasant 23°C (73°F). With an average precipitation of 42 mm (1.7 in) spread over 5 days, and humidity levels reaching 84%, it's wise to dress in layers and prepare for both cold and damp conditions!

December Temperature in Keokuk

In December in Keokuk, the average temperature is 1°C (35°F), with maximums reaching 23°C (73°F) and minimums dropping as low as -21°C (-5°F). It's advisable to pack for a wide range of temperatures to ensure comfort during your travels.

December Weather in Keokuk: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Keokuk, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Keokuk, December typically has an average temperature of 1°C (35°F), with highs reaching up to 23°C (73°F) and lows dropping to around -21°C (-5°F).
JanFebMarAprMayJunJulAugSepOctNovDec272942516475797570554134
Data source: Temperature data for Keokuk 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 Keokuk

In Keokuk in December, the precipitation amount is 42 mm (1.7 in) over a span of 5 days.

December Precipitation Trends in Keokuk

The chart displays monthly precipitation patterns in Keokuk, 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 Keokuk, December typically receives around 42 mm (1.7 inches) of precipitation spread over approximately 5 days.
JanFebMarAprMayJunJulAugSepOctNovDec5658100951691218685991185042
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Keokuk

In Keokuk in December humidity is 84%. With an average temperature of 1°C (35°F), this humidity feels like a cold, damp chill that seeps into your bones, making it feel much colder than the thermometer suggests, which can be quite uncomfortable for traveling.

December Average Humidity in Keokuk

This chart illustrates the average monthly humidity levels in Keokuk, 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 Keokuk is approximately 84%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec81%81%81%82%78%81%79%77%78%79%87%84%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Keokuk

In Keokuk in December, the maximum UV index is 2, which corresponds to a low exposure category. With this level of UV radiation, the time to burn is approximately 45 minutes. To learn more about the hourly UV index in Keokuk, you can visit Hourly UV Index in Keokuk.

Maximum UV Index Levels in Keokuk for December

The chart shows the monthly maximum UV Index (UVI) for Keokuk 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 Keokuk typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec35699111098642
Data source: Keokuk 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 Keokuk Compares to Other Months

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

This table compares monthly weather conditions in Keokuk, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-3°C (27°F)56 mm (2.2 inches)81%moderate
February Weather-2°C (29°F)58 mm (2.3 inches)81%moderate
March Weather6°C (43°F)100 mm (3.9 inches)81%high
April Weather11°C (52°F)95 mm (3.7 inches)82%very high
May Weather18°C (65°F)169 mm (6.7 inches)78%very high
June Weather24°C (76°F)121 mm (4.8 inches)81%extreme
July Weather26°C (79°F)86 mm (3.4 inches)79%very high
August Weather24°C (75°F)85 mm (3.3 inches)77%very high
September Weather21°C (70°F)99 mm (3.9 inches)78%very high
October Weather13°C (56°F)118 mm (4.6 inches)78%high
November Weather5°C (41°F)50 mm (2.0 inches)87%moderate
December Weather1°C (35°F)42 mm (1.7 inches)84%low

Compare Keokuk's Climate with Cities Worldwide