Last updated: June 24, 2025
In West Union, United States, the average temperature in December hovers around -2°C (28°F), with extremes ranging from a chilly -23°C (-9°F) to a milder 20°C (69°F). During this month, expect about 38 mm (1.5 in) of precipitation over 6 days, contributing to an average humidity level of 82%. Whether you're braving the cold or enjoying the brief warm spells, be prepared for a dynamic climate!
In December in West Union, the average temperature is -2°C (28°F). Maximum temperatures can reach 20°C (69°F), while minimums can drop as low as -23°C (-9°F). Travelers should be prepared for a wide range of temperatures and pack accordingly.
In West Union in December, the total precipitation amount is 38 mm (1.5 in) spread over 6 days.
In West Union in December, humidity is 82%. With an average temperature of -2°C (28°F), this humidity feels like an icy shroud enveloping you, making every breath feel crisp and biting as you navigate through a winter wonderland, each step a reminder of the contrast between the cold air and the heavy moisture lingering in the atmosphere.
In West Union 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 West Union, you can visit Hourly UV Index in West Union.
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 | -7°C (20°F) | 40 mm (1.6 inches) | 84% | moderate |
| February Weather | -6°C (21°F) | 52 mm (2.1 inches) | 85% | moderate |
| March Weather | 2°C (36°F) | 64 mm (2.5 inches) | 84% | moderate |
| April Weather | 7°C (46°F) | 76 mm (3.0 inches) | 83% | very high |
| May Weather | 15°C (60°F) | 162 mm (6.4 inches) | 75% | very high |
| June Weather | 22°C (71°F) | 132 mm (5.2 inches) | 79% | very high |
| July Weather | 23°C (74°F) | 103 mm (4.1 inches) | 75% | very high |
| August Weather | 21°C (71°F) | 104 mm (4.1 inches) | 69% | very high |
| September Weather | 18°C (65°F) | 122 mm (4.8 inches) | 74% | very high |
| October Weather | 10°C (50°F) | 136 mm (5.3 inches) | 79% | moderate |
| November Weather | 2°C (35°F) | 50 mm (2.0 inches) | 88% | moderate |
| December Weather | -2°C (28°F) | 38 mm (1.5 inches) | 82% | low |