Last updated: June 24, 2025
In December, the average temperature in Hilliard, United States hovers around 2°C (36°F). Expect a chilly atmosphere where temperatures can dip to a brisk -17°C (3°F) at night, while peak daytime warmth might reach 19°C (66°F). Precipitation is common, with an average of 97 mm (3.8 in) spread over 11 days, contributing to a notably high average humidity of 87%. Prepare for a wet and cool experience!
In December in Hilliard, the average temperature is 2°C (36°F). The maximum can reach 19°C (66°F), and the minimum can be as low as -17°C (3°F). Be prepared for a wide range of temperatures during your travels, and pack accordingly!
In Hilliard in December, the total precipitation amount is 97 mm (3.8 in) over the course of 11 days.
In Hilliard in December, humidity is 87%. With an average temperature of 2°C (36°F), this humidity feels like an unwelcome chill that seeps into your bones, making outdoor exploration feel damp and heavy, and encouraging travelers to seek the warmth of indoor attractions instead.
In Hilliard 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 Hilliard, you can check the information here.
UV Risk Categories
Weather in Hilliard varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Hilliard, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -1°C (31°F) | 76 mm (3.0 inches) | 88% | moderate |
| February Weather | 1°C (34°F) | 101 mm (4.0 inches) | 88% | moderate |
| March Weather | 6°C (43°F) | 108 mm (4.2 inches) | 87% | high |
| April Weather | 11°C (52°F) | 113 mm (4.4 inches) | 85% | very high |
| May Weather | 18°C (64°F) | 127 mm (5.0 inches) | 81% | very high |
| June Weather | 22°C (72°F) | 137 mm (5.4 inches) | 82% | very high |
| July Weather | 24°C (76°F) | 115 mm (4.5 inches) | 81% | very high |
| August Weather | 23°C (74°F) | 86 mm (3.4 inches) | 73% | very high |
| September Weather | 20°C (69°F) | 89 mm (3.5 inches) | 73% | very high |
| October Weather | 14°C (58°F) | 96 mm (3.8 inches) | 78% | high |
| November Weather | 5°C (42°F) | 94 mm (3.7 inches) | 89% | moderate |
| December Weather | 2°C (36°F) | 97 mm (3.8 inches) | 87% | moderate |