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December Weather in Oak Park, United States

Last updated: June 24, 2025

In December, the average temperature in Oak Park, United States hovers around 12°C (55°F). Expect lows of 1°C (34°F) and highs reaching up to 28°C (82°F). During this month, precipitation amounts to 86 mm (3.4 in), typically spread over 5 days, with an average humidity of 76%. Be prepared for a mix of cool and warm days!

December Temperature in Oak Park

In December in Oak Park, the average temperature is 12°C (55°F). The maximum can reach 28°C (82°F) and the minimum can be as low as 1°C (34°F). This makes it a great time for travelers to enjoy a mix of pleasant warmth and cooler evenings.

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

The chart illustrates December 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, December typically has an average temperature of 12°C (55°F), with highs reaching up to 28°C (82°F) and lows dropping to around 1°C (34°F).
JanFebMarAprMayJunJulAugSepOctNovDec555557626369747572686154
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.

December Precipitation in Oak Park

In Oak Park in December, the precipitation amount is 86 mm (3.4 in) over the course of 5 days.

December Precipitation Trends in Oak Park

The chart displays monthly precipitation patterns in Oak Park, with values for each month alongside December’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how December’s conditions compare to those of other months. In Oak Park, December typically receives around 86 mm (3.4 inches) of precipitation spread over approximately 5 days.
JanFebMarAprMayJunJulAugSepOctNovDec79638020152112101986
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Oak Park

In Oak Park in December humidity is 76%. With an average temperature of 12°C (55°F), this humidity feels like a damp embrace, making traveling somewhat uncomfortable as the air clings to your skin and can leave you feeling cooler than expected.

December Average Humidity in Oak Park

This chart illustrates the average monthly humidity levels in Oak Park, with December’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In December, average humidity in Oak Park is approximately 76%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec78%82%76%68%58%52%46%39%48%59%72%76%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Oak Park

In Oak Park in December, the maximum UV index reaches 4, which corresponds to a moderate Exposure Category. With a time to burn of 30 minutes, it’s important to take precautions to protect your skin. You can find more details in the Hourly UV Index in Oak Park for better planning.

Maximum UV Index Levels in Oak Park for December

The chart shows the monthly maximum UV Index (UVI) for Oak Park in December, 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 December, the maximum UV index in Oak Park typically reaches 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec468101111121110754
Data source: Oak Park December 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 December 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 December’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 December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather13°C (55°F)79 mm (3.1 inches)78%moderate
February Weather13°C (55°F)63 mm (2.5 inches)82%high
March Weather14°C (57°F)80 mm (3.2 inches)75%very high
April Weather17°C (62°F)20 mm (0.8 inches)68%very high
May Weather17°C (64°F)15 mm (0.6 inches)57%extreme
June Weather20°C (69°F)2 mm (0.1 inches)52%extreme
July Weather23°C (74°F)1 mm (0.0 inches)46%extreme
August Weather24°C (75°F)1 mm (0.0 inches)39%extreme
September Weather22°C (73°F)2 mm (0.1 inches)48%very high
October Weather20°C (68°F)10 mm (0.4 inches)59%high
November Weather16°C (62°F)19 mm (0.7 inches)72%moderate
December Weather12°C (55°F)86 mm (3.4 inches)76%moderate

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