Last updated: June 24, 2025
In West Union, United States, the average temperature in December hovers around 4°C (39°F), showcasing a charming winter atmosphere. Prepare for a range that can dip to a chilly -14°C (7°F) and rise to a pleasant 20°C (68°F). During this time, expect around 125 mm (4.9 in) of precipitation spread over approximately 13 days, coupled with high humidity levels at 86%, creating a crisp and refreshing climate.
In December in West Union, the average temperature is 4°C (39°F), with maximums reaching up to 20°C (68°F) and minimums plummeting to as low as -14°C (7°F). Be sure to pack layers to prepare for a range of temperatures while exploring this destination.
In West Union in December, the total precipitation amount is 125 mm (4.9 in), occurring over a span of 13 days.
In West Union in December humidity is 86%. With an average temperature of 4°C (39°F), this humidity feels like a chilly mist enveloping you, making it essential to bundle up while exploring, as each breath comes with a damp chill that can be quite refreshing yet starkly invigorating for travelers.
In West Union 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 West Union, you can check the information here.
UV Risk Categories
Weather in West Union varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in West Union, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 1°C (34°F) | 97 mm (3.8 inches) | 88% | moderate |
| February Weather | 4°C (39°F) | 141 mm (5.6 inches) | 88% | moderate |
| March Weather | 7°C (45°F) | 117 mm (4.6 inches) | 88% | high |
| April Weather | 12°C (54°F) | 146 mm (5.8 inches) | 86% | very high |
| May Weather | 18°C (64°F) | 157 mm (6.2 inches) | 82% | very high |
| June Weather | 22°C (71°F) | 176 mm (6.9 inches) | 84% | very high |
| July Weather | 24°C (75°F) | 136 mm (5.3 inches) | 82% | very high |
| August Weather | 23°C (73°F) | 117 mm (4.6 inches) | 73% | very high |
| September Weather | 20°C (69°F) | 112 mm (4.4 inches) | 73% | very high |
| October Weather | 15°C (59°F) | 114 mm (4.5 inches) | 81% | high |
| November Weather | 7°C (44°F) | 87 mm (3.4 inches) | 89% | moderate |
| December Weather | 4°C (39°F) | 125 mm (4.9 inches) | 86% | moderate |