January Weather in Carol Stream, United States

Last updated: June 24, 2025

In January, the average temperature in Carol Stream, United States hovers around -4°C (25°F). Be prepared for chilly extremes, as the minimum can plunge to -31°C (-24°F), while the mercury may rise to a maximum of 14°C (58°F). Expect a total precipitation of 61 mm (2.4 in) spread over 7 days, accompanied by a high average humidity of 82%.

January Temperature in Carol Stream

In January in Carol Stream, the average temperature is -4°C (25°F), with maximums reaching 14°C (58°F) and minimums dropping as low as -31°C (-24°F). Be prepared for a wide range of temperatures, making it essential to pack accordingly for your trip.

January Weather in Carol Stream: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Carol Stream, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Carol Stream, January typically has an average temperature of -4°C (25°F), with highs reaching up to 14°C (58°F) and lows dropping to around -31°C (-24°F).

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

January Precipitation in Carol Stream

In Carol Stream in January, the precipitation amount is 61 mm (2.4 in) over the course of 7 days.

January Precipitation Trends in Carol Stream

The chart displays monthly precipitation patterns in Carol Stream, 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 Carol Stream, January typically receives around 61 mm (2.4 inches) of precipitation spread over approximately 7 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 Carol Stream

In Carol Stream in January, humidity is 82%. With an average temperature of -4°C (25°F), this humidity feels like a biting chill that seeps into your bones, making travel uncomfortable and necessitating warm, layered clothing to shield against the damp cold.

January Average Humidity in Carol Stream

This chart illustrates the average monthly humidity levels in Carol Stream, 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 Carol Stream is approximately 82%, 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 Carol Stream

In Carol Stream 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 Carol Stream, you can check the information here.

Maximum UV Index Levels in Carol Stream for January

The chart shows the monthly maximum UV Index (UVI) for Carol Stream 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 Carol Stream typically reaches 3, which falls under the moderate exposure category.

Data source: Carol Stream 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 Carol Stream Compares to Other Months

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

This table compares monthly weather conditions in Carol Stream, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-4°C (25°F)	61 mm (2.4 inches)	82%	moderate
February Weather	-3°C (27°F)	59 mm (2.3 inches)	83%	moderate
March Weather	4°C (39°F)	81 mm (3.2 inches)	84%	high
April Weather	9°C (48°F)	117 mm (4.6 inches)	85%	very high
May Weather	16°C (61°F)	168 mm (6.6 inches)	79%	very high
June Weather	22°C (72°F)	140 mm (5.5 inches)	82%	very high
July Weather	24°C (75°F)	106 mm (4.2 inches)	80%	very high
August Weather	22°C (73°F)	99 mm (3.9 inches)	81%	very high
September Weather	19°C (67°F)	91 mm (3.6 inches)	80%	very high
October Weather	12°C (54°F)	127 mm (5.0 inches)	82%	high
November Weather	3°C (38°F)	54 mm (2.1 inches)	88%	moderate
December Weather	0°C (32°F)	53 mm (2.1 inches)	84%	low