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January Weather in Oak Park, United States

Last updated: June 24, 2025

In Oak Park, United States, the average temperature in January is a crisp 2°C (35°F). Expect a chilly minimum of -18°C (0°F), while the mercury can rise to a comfortable maximum of 20°C (68°F). During this month, 87 mm (3.4 in) of precipitation falls over 9 days, contributing to an average humidity of 87%. Prepare for a blend of wintry chills and the occasional mild day!

January Temperature in Oak Park

In January in Oak Park, the average temperature is 2°C (35°F). Maximum temperatures can reach 20°C (68°F), while minimums can dip as low as -18°C (0°F). Be prepared for a wide range of temperatures, and pack accordingly for your travels!

January Weather in Oak Park: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Oak Park, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Oak Park, January typically has an average temperature of 2°C (35°F), with highs reaching up to 20°C (68°F) and lows dropping to around -18°C (0°F).
JanFebMarAprMayJunJulAugSepOctNovDec353948566775787671604541
Data source: Temperature data for Oak Park generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

January Precipitation in Oak Park

In Oak Park in January, the precipitation amount is 87 mm (3.4 in), occurring over a span of 9 days.

January Precipitation Trends in Oak Park

The chart displays monthly precipitation patterns in Oak Park, 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 Oak Park, January typically receives around 87 mm (3.4 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec8712813213712815198941129888106
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
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January Humidity in Oak Park

In Oak Park in January, humidity is 87%. With an average temperature of 2°C (35°F), this humidity feels like a damp chill that seeps into your bones, making traveling feel uncomfortable and heavy, as each breath carries a hint of the cold, moist air that lingers around you.

January Average Humidity in Oak Park

This chart illustrates the average monthly humidity levels in Oak Park, 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 Oak Park is approximately 87%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%85%86%84%79%82%79%70%69%76%88%87%
Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Oak Park

In Oak Park 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 Oak Park, you can check the information here.

Maximum UV Index Levels in Oak Park for January

The chart shows the monthly maximum UV Index (UVI) for Oak Park 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 Oak Park typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3579101110108743
Data source: Oak Park 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 Oak Park Compares to Other Months

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

This table compares monthly weather conditions in Oak Park, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather2°C (35°F)87 mm (3.4 inches)87%moderate
February Weather4°C (40°F)128 mm (5.0 inches)85%moderate
March Weather9°C (48°F)132 mm (5.2 inches)86%high
April Weather13°C (56°F)137 mm (5.4 inches)84%very high
May Weather20°C (67°F)128 mm (5.0 inches)79%very high
June Weather24°C (75°F)151 mm (5.9 inches)82%extreme
July Weather26°C (79°F)98 mm (3.9 inches)79%very high
August Weather25°C (76°F)94 mm (3.7 inches)70%very high
September Weather22°C (72°F)112 mm (4.4 inches)69%very high
October Weather16°C (60°F)98 mm (3.9 inches)76%high
November Weather7°C (45°F)88 mm (3.5 inches)88%moderate
December Weather5°C (41°F)106 mm (4.2 inches)87%moderate

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