January Weather in Oakbrook, United States

Last updated: June 24, 2025

In January, the average temperature in Oakbrook, United States hovers around 1°C (34°F). Expect temperatures to dip as low as -21°C (-5°F) and occasionally rise to a maximum of 20°C (69°F). Be prepared for approximately 80 mm (3.1 in) of precipitation spread over 9 days, accompanied by an average humidity of 88%.

January Temperature in Oakbrook

In January in Oakbrook, the average temperature is 1°C (34°F), with maximums reaching 20°C (69°F) and minimums dipping as low as -21°C (-5°F). This range suggests a dramatic contrast in weather, so travelers should prepare for both chilly and relatively warm conditions during their visit.

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

The chart illustrates January temperature patterns in Oakbrook, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Oakbrook, January typically has an average temperature of 1°C (34°F), with highs reaching up to 20°C (69°F) and lows dropping to around -21°C (-5°F).

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

January Precipitation in Oakbrook

In Oakbrook in January, the precipitation amount is 80 mm (3.1 in) spread over 9 days.

January Precipitation Trends in Oakbrook

The chart displays monthly precipitation patterns in Oakbrook, 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 Oakbrook, January typically receives around 80 mm (3.1 inches) of precipitation spread over approximately 9 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 Oakbrook

In Oakbrook in January humidity is 88%. With an average temperature of 1°C (34°F), this humidity feels like a chilling embrace, making travel feel damp and brisk, where every breath carries a crisp bite, and the air clings to your skin, urging you to seek warmth and comfort.

January Average Humidity in Oakbrook

This chart illustrates the average monthly humidity levels in Oakbrook, 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 Oakbrook is approximately 88%, 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 Oakbrook

In Oakbrook 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 Oakbrook, you can check the information here.

Maximum UV Index Levels in Oakbrook for January

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

Data source: Oakbrook 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 Oakbrook Compares to Other Months

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

This table compares monthly weather conditions in Oakbrook, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	1°C (34°F)	80 mm (3.1 inches)	88%	moderate
February Weather	3°C (38°F)	110 mm (4.3 inches)	88%	moderate
March Weather	7°C (46°F)	135 mm (5.3 inches)	87%	high
April Weather	12°C (55°F)	125 mm (4.9 inches)	85%	very high
May Weather	19°C (66°F)	126 mm (4.9 inches)	81%	very high
June Weather	23°C (74°F)	146 mm (5.7 inches)	82%	very high
July Weather	25°C (78°F)	113 mm (4.5 inches)	81%	very high
August Weather	24°C (75°F)	95 mm (3.7 inches)	73%	very high
September Weather	21°C (71°F)	87 mm (3.4 inches)	73%	very high
October Weather	15°C (59°F)	98 mm (3.9 inches)	78%	high
November Weather	7°C (44°F)	93 mm (3.7 inches)	89%	moderate
December Weather	4°C (39°F)	109 mm (4.3 inches)	87%	moderate