January Weather in Willis, United States

Last updated: June 24, 2025

In January, the average temperature in Willis, United States is a cool 11°C (53°F). Expect a range that can dip to a frosty -8°C (17°F) at its lowest and reach a pleasant 28°C (83°F) at its peak. With 89 mm (3.5 in) of precipitation over about 8 days, it's wise to prepare for some rain. The average humidity sits at a high 79%, making the air feel quite damp.

January Temperature in Willis

In January in Willis, the average temperature is 11°C (53°F). The maximum can reach 28°C (83°F) and the minimum can be as low as -8°C (17°F). Be prepared for a diverse range of weather conditions if you're traveling during this time.

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

The chart illustrates January temperature patterns in Willis, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Willis, January typically has an average temperature of 11°C (53°F), with highs reaching up to 28°C (83°F) and lows dropping to around -8°C (17°F).

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

January Precipitation in Willis

In Willis in January, the precipitation amount is 89 mm (3.5 in) over a span of 8 days.

January Precipitation Trends in Willis

The chart displays monthly precipitation patterns in Willis, 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 Willis, January typically receives around 89 mm (3.5 inches) of precipitation spread over approximately 8 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

January Humidity in Willis

In Willis in January, humidity is 79%. With an average temperature of 11°C (53°F), this humidity feels like a damp chill that can make traveling uncomfortable, as the cool air clings to your skin and dampens your clothes, leaving you seeking shelter and a warm drink more often than not.

January Average Humidity in Willis

This chart illustrates the average monthly humidity levels in Willis, 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 Willis is approximately 79%, 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 Willis

In Willis in January, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in Willis.

Maximum UV Index Levels in Willis for January

The chart shows the monthly maximum UV Index (UVI) for Willis 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 Willis typically reaches 5, which falls under the moderate exposure category.

Data source: Willis 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 Willis Compares to Other Months

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

This table compares monthly weather conditions in Willis, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	11°C (53°F)	89 mm (3.5 inches)	79%	moderate
February Weather	13°C (55°F)	109 mm (4.3 inches)	80%	very high
March Weather	18°C (64°F)	84 mm (3.3 inches)	78%	very high
April Weather	20°C (68°F)	103 mm (4.1 inches)	79%	extreme
May Weather	24°C (76°F)	199 mm (7.8 inches)	81%	extreme
June Weather	27°C (82°F)	146 mm (5.7 inches)	77%	extreme
July Weather	29°C (84°F)	107 mm (4.2 inches)	71%	extreme
August Weather	29°C (84°F)	153 mm (6.0 inches)	67%	extreme
September Weather	26°C (80°F)	139 mm (5.5 inches)	69%	very high
October Weather	21°C (71°F)	107 mm (4.2 inches)	73%	very high
November Weather	16°C (60°F)	79 mm (3.1 inches)	82%	high
December Weather	13°C (56°F)	119 mm (4.7 inches)	87%	moderate