Last updated: June 24, 2025
In December, the average temperature in Geneva, United States hovers around 0°C (33°F), with extremes ranging from a chilly -16°C (3°F) to a mild 17°C (63°F). The region experiences 91 mm (3.6 in) of precipitation spread over 15 days, contributing to a notable average humidity of 86%. Prepare for a wet and cold atmosphere during this time!
In December in Geneva, the average temperature is 0°C (33°F). Maximums can reach 17°C (63°F), while minimums can drop as low as -16°C (3°F). Pack accordingly for a trip to Geneva this month, as you'll experience a mix of chilly and mild weather.
In Geneva in December, the total precipitation amount is 91 mm (3.6 in) over a span of 15 days.
In Geneva in December humidity is 86%. With an average temperature of 0°C (33°F), this humidity feels like a damp chill that permeates your clothes, making traveling uncomfortable and necessitating warm, layered clothing to stay dry and cozy.
In Geneva 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 Geneva, you can visit Hourly UV Index in Geneva.
UV Risk Categories
Weather in Geneva varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Geneva, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -3°C (27°F) | 77 mm (3.0 inches) | 90% | moderate |
| February Weather | -2°C (29°F) | 81 mm (3.2 inches) | 90% | moderate |
| March Weather | 2°C (35°F) | 74 mm (2.9 inches) | 87% | high |
| April Weather | 8°C (46°F) | 112 mm (4.4 inches) | 88% | very high |
| May Weather | 14°C (58°F) | 116 mm (4.5 inches) | 82% | very high |
| June Weather | 20°C (68°F) | 89 mm (3.5 inches) | 79% | very high |
| July Weather | 23°C (73°F) | 142 mm (5.6 inches) | 78% | very high |
| August Weather | 22°C (72°F) | 95 mm (3.8 inches) | 76% | very high |
| September Weather | 18°C (65°F) | 81 mm (3.2 inches) | 78% | very high |
| October Weather | 12°C (55°F) | 142 mm (5.6 inches) | 84% | high |
| November Weather | 5°C (41°F) | 86 mm (3.4 inches) | 89% | moderate |
| December Weather | 0°C (33°F) | 91 mm (3.6 inches) | 86% | low |