January Weather in Hannibal, United States

Last updated: June 24, 2025

In January, the average temperature in Hannibal, United States hovers around -3°C (27°F). Expect chilly extremes as lows can plummet to -21°C (-6°F), while the mercury may rise to a maximum of 16°C (61°F). With an average humidity of 90% and 96 mm (3.8 in) of precipitation over 14 days, it's wise to prepare for a mix of cold and wet weather. Careful planning will ensure you enjoy the beauty of this wintry location!

January Temperature in Hannibal

In January in Hannibal, the average temperature is -3°C (27°F). Maximums can reach 16°C (61°F), and minimums can drop as low as -21°C (-6°F). Travelers should be prepared for a wide temperature range, ensuring they pack suitable clothing for both mild and extreme conditions.

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

The chart illustrates January 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, January typically has an average temperature of -3°C (27°F), with highs reaching up to 16°C (61°F) and lows dropping to around -21°C (-6°F).

Data source: Temperature data for Hannibal generated using information from the Copernicus Climate Change Service.

January Precipitation in Hannibal

In Hannibal in January, the total precipitation amount is 96 mm (3.8 in) over the course of 14 days.

January Precipitation Trends in Hannibal

The chart displays monthly precipitation patterns in Hannibal, with values for each month alongside January’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how January’s conditions compare to those of other months. In Hannibal, January typically receives around 96 mm (3.8 inches) of precipitation spread over approximately 14 days.

Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

January Humidity in Hannibal

In Hannibal in January humidity is 90%. With an average temperature of -3°C (27°F), this humidity feels like a bitter chill that seeps into your bones, making travel uncomfortable and necessitating extra layers to combat both the cold and the dampness in the air.

January Average Humidity in Hannibal

This chart illustrates the average monthly humidity levels in Hannibal, with January’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In January, average humidity in Hannibal is approximately 90%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Hannibal

In Hannibal in January, 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 Hannibal, you can check the information here.

Maximum UV Index Levels in Hannibal for January

The chart shows the monthly maximum UV Index (UVI) for Hannibal in January, 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 January, the maximum UV index in Hannibal typically reaches 3, which falls under the moderate exposure category.

Data source: Hannibal January 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 January 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 January’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 January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
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 Weather	1°C (35°F)	87 mm (3.4 inches)	87%	high
April Weather	7°C (45°F)	121 mm (4.8 inches)	88%	very high
May Weather	14°C (57°F)	121 mm (4.8 inches)	82%	very high
June Weather	19°C (66°F)	93 mm (3.7 inches)	79%	very high
July Weather	23°C (73°F)	185 mm (7.3 inches)	78%	very high
August Weather	22°C (72°F)	123 mm (4.8 inches)	76%	very high
September Weather	18°C (65°F)	90 mm (3.5 inches)	78%	high
October Weather	13°C (55°F)	169 mm (6.7 inches)	84%	high
November Weather	5°C (41°F)	113 mm (4.5 inches)	89%	moderate
December Weather	0°C (33°F)	116 mm (4.5 inches)	86%	low