Last updated: June 24, 2025
In December, the average temperature in Byron, United States hovers around 0°C (32°F). Expect a chilly range, with minimums dropping to -22°C (-7°F) and maximums reaching up to 17°C (63°F). During this period, the area experiences approximately 55 mm (2.1 in) of precipitation over 9 days, complemented by an average humidity level of 86%. Stay warm and prepared!
In December in Byron, the average temperature is 0°C (32°F). Maximum temperatures can reach 17°C (63°F), while the minimum can drop as low as -22°C (-7°F). Travelers should be prepared for a wide range of temperatures and pack accordingly.
In Byron in December, the total precipitation amount is 55 mm (2.1 in) over the course of 9 days.
In Byron in December humidity is 86%. With an average temperature of 0°C (32°F), this humidity feels like a biting chill that seeps into your bones, making travel feel uncomfortable and damp, as the cold air combines with the moisture to create a brisk sensation that may deter outdoor exploration.
In Byron 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 Byron, you can visit Hourly UV Index in Byron.
UV Risk Categories
Weather in Byron varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Byron, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -4°C (26°F) | 63 mm (2.5 inches) | 88% | low |
| February Weather | -3°C (27°F) | 66 mm (2.6 inches) | 87% | moderate |
| March Weather | 2°C (37°F) | 69 mm (2.7 inches) | 85% | moderate |
| April Weather | 8°C (47°F) | 91 mm (3.6 inches) | 86% | very high |
| May Weather | 15°C (60°F) | 111 mm (4.4 inches) | 80% | very high |
| June Weather | 21°C (70°F) | 103 mm (4.0 inches) | 80% | very high |
| July Weather | 23°C (74°F) | 88 mm (3.5 inches) | 80% | very high |
| August Weather | 22°C (72°F) | 75 mm (2.9 inches) | 80% | very high |
| September Weather | 18°C (65°F) | 83 mm (3.3 inches) | 80% | high |
| October Weather | 12°C (53°F) | 109 mm (4.3 inches) | 84% | moderate |
| November Weather | 3°C (39°F) | 67 mm (2.6 inches) | 89% | moderate |
| December Weather | 0°C (32°F) | 55 mm (2.1 inches) | 86% | low |