Last updated: June 24, 2025
In Marion, United States, the average temperature in December hovers around -3°C (26°F), making it a chilly time of year. Temperatures can dip as low as -25°C (-13°F), while reaching a comfortable 16°C (62°F) at their peak. Expect 38 mm (1.5 in) of precipitation spread over approximately 4 days, contributing to an average humidity of 83%. Bundle up and enjoy the frosty atmosphere!
In December in Marion, the average temperature is -3°C (26°F), with maximums reaching up to 16°C (62°F) and minimums dropping as low as -25°C (-13°F). Travelers should be prepared for a wide range of temperatures, from chilly to surprisingly mild.
In Marion in December, the total precipitation amount is 38 mm (1.5 in) spread over the course of 4 days.
In Marion in December, humidity is 83%. With an average temperature of -3°C (26°F), this humidity feels like a heavy blanket of cold air enveloping you, making it challenging to stay warm while traveling. The dampness seeps into your clothing, creating an uncomfortable chill that lingers even indoors, often requiring extra layers and careful planning for outdoor activities.
In Marion 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 Marion, you can visit Hourly UV Index in Marion.
UV Risk Categories
Weather in Marion varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Marion, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -7°C (20°F) | 20 mm (0.8 inches) | 80% | low |
| February Weather | -7°C (20°F) | 22 mm (0.9 inches) | 84% | moderate |
| March Weather | 2°C (35°F) | 64 mm (2.5 inches) | 75% | moderate |
| April Weather | 7°C (45°F) | 77 mm (3.0 inches) | 79% | very high |
| May Weather | 15°C (59°F) | 124 mm (4.9 inches) | 74% | very high |
| June Weather | 23°C (73°F) | 82 mm (3.2 inches) | 81% | extreme |
| July Weather | 24°C (76°F) | 85 mm (3.4 inches) | 82% | very high |
| August Weather | 22°C (72°F) | 95 mm (3.8 inches) | 80% | very high |
| September Weather | 19°C (66°F) | 100 mm (3.9 inches) | 75% | very high |
| October Weather | 9°C (48°F) | 76 mm (3.0 inches) | 77% | moderate |
| November Weather | 2°C (35°F) | 24 mm (0.9 inches) | 85% | moderate |
| December Weather | -3°C (26°F) | 38 mm (1.5 inches) | 83% | low |