January Weather in Mundelein, United States

Last updated: June 24, 2025

In January, the average temperature in Mundelein, United States hovers around -3°C (26°F), with a minimum dipping to an icy -29°C (-20°F) and a maximum reaching a mild 13°C (55°F). Expect 68 mm (2.7 in) of precipitation over approximately 8 days, contributing to an average humidity level of 85%. Stay warm and prepared for the chilly weather!

January Temperature in Mundelein

In January in Mundelein, the average temperature is -3°C (26°F), with maximums reaching 13°C (55°F) and minimums dipping as low as -29°C (-20°F). It's essential to pack warm clothing if you plan to travel during this time, as the temperatures can vary significantly.

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

The chart illustrates January temperature patterns in Mundelein, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Mundelein, January typically has an average temperature of -3°C (26°F), with highs reaching up to 13°C (55°F) and lows dropping to around -29°C (-20°F).

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

January Precipitation in Mundelein

In Mundelein in January, the precipitation amount is 68 mm (2.7 in) spread over 8 days.

January Precipitation Trends in Mundelein

The chart displays monthly precipitation patterns in Mundelein, 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 Mundelein, January typically receives around 68 mm (2.7 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 Mundelein

In Mundelein in January humidity is 85%. With an average temperature of -3°C (26°F), this humidity feels like an uncomfortable chill that penetrates your clothes, making traveling quite unpleasant as each breath is met with a brisk dampness that numbs the skin.

January Average Humidity in Mundelein

This chart illustrates the average monthly humidity levels in Mundelein, 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 Mundelein is approximately 85%, 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 Mundelein

In Mundelein in January, 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 Mundelein, you can visit Hourly UV Index in Mundelein.

Maximum UV Index Levels in Mundelein for January

The chart shows the monthly maximum UV Index (UVI) for Mundelein 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 Mundelein typically reaches 2, which falls under the low exposure category.

Data source: Mundelein 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 Mundelein Compares to Other Months

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

This table compares monthly weather conditions in Mundelein, 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 (26°F)	68 mm (2.7 inches)	85%	low
February Weather	-3°C (28°F)	67 mm (2.6 inches)	85%	moderate
March Weather	3°C (38°F)	76 mm (3.0 inches)	85%	high
April Weather	7°C (46°F)	118 mm (4.6 inches)	85%	very high
May Weather	14°C (57°F)	164 mm (6.5 inches)	78%	very high
June Weather	20°C (68°F)	109 mm (4.3 inches)	80%	very high
July Weather	23°C (74°F)	84 mm (3.3 inches)	78%	very high
August Weather	22°C (73°F)	83 mm (3.3 inches)	76%	very high
September Weather	19°C (67°F)	85 mm (3.3 inches)	79%	very high
October Weather	12°C (54°F)	133 mm (5.2 inches)	83%	moderate
November Weather	4°C (40°F)	58 mm (2.3 inches)	88%	moderate
December Weather	1°C (33°F)	59 mm (2.3 inches)	81%	low