Last updated: June 24, 2025
In Oak Park, United States, the average temperature in December hovers around 5°C (41°F), with a minimum dipping as low as -14°C (8°F) and a maximum reaching up to 22°C (71°F). Expect about 106 mm (4.2 in) of precipitation spread over 10 days, coupled with an average humidity of 87%. Prepare for a chilly, damp month ahead!
In December in Oak Park, the average temperature is 5°C (41°F). The maximum can reach 22°C (71°F), while the minimum can drop as low as -14°C (8°F). Be prepared for a wide range of temperatures if you're planning to travel during this time.
In Oak Park in December, the precipitation amount is 106 mm (4.2 in) over a span of 10 days.
In Oak Park in December humidity is 87%. With an average temperature of 5°C (41°F), this humidity feels like a heavy, damp blanket enveloping you, making every step seem laborious and the chill more biting, which can be quite challenging for traveling.
In Oak Park in December, 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.
UV Risk Categories
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.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 2°C (35°F) | 87 mm (3.4 inches) | 87% | moderate |
| February Weather | 4°C (40°F) | 128 mm (5.0 inches) | 85% | moderate |
| March Weather | 9°C (48°F) | 132 mm (5.2 inches) | 86% | high |
| April Weather | 13°C (56°F) | 137 mm (5.4 inches) | 84% | very high |
| May Weather | 20°C (67°F) | 128 mm (5.0 inches) | 79% | very high |
| June Weather | 24°C (75°F) | 151 mm (5.9 inches) | 82% | extreme |
| July Weather | 26°C (79°F) | 98 mm (3.9 inches) | 79% | very high |
| August Weather | 25°C (76°F) | 94 mm (3.7 inches) | 70% | very high |
| September Weather | 22°C (72°F) | 112 mm (4.4 inches) | 69% | very high |
| October Weather | 16°C (60°F) | 98 mm (3.9 inches) | 76% | high |
| November Weather | 7°C (45°F) | 88 mm (3.5 inches) | 88% | moderate |
| December Weather | 5°C (41°F) | 106 mm (4.2 inches) | 87% | moderate |