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December Weather in Hannibal, United States

Last updated: June 24, 2025

In December, the average temperature in Hannibal, United States hovers around 0°C (33°F), with a minimum dipping to -15°C (5°F) and a maximum reaching 17°C (63°F). Expect a fair amount of precipitation, measuring 116 mm (4.5 in) over approximately 19 days. The air remains quite moist, boasting an average humidity of 86%.

December Temperature in Hannibal

In December in Hannibal, the average temperature is 0°C (33°F). Maximum temperatures can reach 17°C (63°F), while the minimum can drop to as low as -15°C (5°F). Travelers should be prepared for a wide range of temperatures and pack accordingly.

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

The chart illustrates December temperature patterns in Hannibal, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Hannibal, December typically has an average temperature of 0°C (33°F), with highs reaching up to 17°C (63°F) and lows dropping to around -15°C (5°F).
JanFebMarAprMayJunJulAugSepOctNovDec272935455766737265554033
Data source: Temperature data for Hannibal 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 Hannibal

In Hannibal in December, the precipitation amount is 116 mm (4.5 in) over a span of 19 days.

December Precipitation Trends in Hannibal

The chart displays monthly precipitation patterns in Hannibal, 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 Hannibal, December typically receives around 116 mm (4.5 inches) of precipitation spread over approximately 19 days.
JanFebMarAprMayJunJulAugSepOctNovDec9697871211219318512390169113116
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Hannibal

In Hannibal in December humidity is 86%. With an average temperature of 0°C (33°F), this humidity feels like a damp chill that permeates your clothes, making traveling uncomfortable and necessitating warm, layered clothing to stay dry and cozy.

December Average Humidity in Hannibal

This chart illustrates the average monthly humidity levels in Hannibal, 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 Hannibal is approximately 86%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec90%90%87%88%82%79%78%76%78%84%89%86%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Hannibal

In Hannibal 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 Hannibal, you can visit Hourly UV Index in Hannibal.

Maximum UV Index Levels in Hannibal for December

The chart shows the monthly maximum UV Index (UVI) for Hannibal 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 Hannibal typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3468910997632
Data source: Hannibal 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 Hannibal Compares to Other Months

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

This table compares monthly weather conditions in Hannibal, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-3°C (27°F)96 mm (3.8 inches)90%moderate
February Weather-2°C (29°F)96 mm (3.8 inches)90%moderate
March Weather1°C (35°F)87 mm (3.4 inches)87%high
April Weather7°C (45°F)121 mm (4.8 inches)88%very high
May Weather14°C (57°F)121 mm (4.8 inches)82%very high
June Weather19°C (66°F)93 mm (3.7 inches)79%very high
July Weather23°C (73°F)185 mm (7.3 inches)78%very high
August Weather22°C (72°F)123 mm (4.8 inches)76%very high
September Weather18°C (65°F)90 mm (3.5 inches)78%high
October Weather13°C (55°F)169 mm (6.7 inches)84%high
November Weather5°C (41°F)113 mm (4.5 inches)89%moderate
December Weather0°C (33°F)116 mm (4.5 inches)86%low

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