Last updated: June 24, 2025
In December, the average temperature in Ironton, United States hovers around -7°C (20°F), but be prepared for some chilly extremes, with minimums plummeting to -29°C (-20°F) and maximums reaching a milder 7°C (45°F). Expect 53 mm (2.1 in) of precipitation over 8 days, combined with a high average humidity of 89%. Dress warmly and stay cozy!
In December in Ironton, the average temperature is -7°C (20°F), with maximums reaching up to 7°C (45°F) and minimums dropping as low as -29°C (-20°F). Travelers should be prepared for very cold conditions and dress warmly if visiting during this time.
In Ironton in December, the total precipitation amount is 53 mm (2.1 in) over the course of 8 days.
In Ironton in December humidity is 89%. With an average temperature of -7°C (20°F), this humidity feels like a biting chill that seeps into your bones, making travel quite uncomfortable as you navigate the frosty air that clings to every breath.
In Ironton in December, the maximum UV index is 2, which corresponds to a low exposure category. With this level of UV radiation, the time to burn is approximately 45 minutes. To learn more about the hourly UV index in Ironton, you can visit Hourly UV Index in Ironton.
UV Risk Categories
Weather in Ironton varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Ironton, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -11°C (13°F) | 19 mm (0.8 inches) | 92% | low |
| February Weather | -11°C (12°F) | 24 mm (0.9 inches) | 93% | moderate |
| March Weather | -2°C (29°F) | 40 mm (1.6 inches) | 88% | moderate |
| April Weather | 3°C (38°F) | 68 mm (2.7 inches) | 83% | high |
| May Weather | 12°C (54°F) | 64 mm (2.5 inches) | 76% | very high |
| June Weather | 20°C (68°F) | 80 mm (3.2 inches) | 76% | very high |
| July Weather | 22°C (72°F) | 88 mm (3.5 inches) | 76% | very high |
| August Weather | 20°C (69°F) | 92 mm (3.6 inches) | 77% | very high |
| September Weather | 16°C (61°F) | 113 mm (4.4 inches) | 77% | high |
| October Weather | 8°C (46°F) | 112 mm (4.4 inches) | 82% | moderate |
| November Weather | -1°C (30°F) | 30 mm (1.2 inches) | 87% | moderate |
| December Weather | -7°C (20°F) | 53 mm (2.1 inches) | 89% | low |