Last updated: June 24, 2025
In December, the average temperature in Georgetown, United States hovers around -2°C (29°F). You'll experience a wide range, with minimums dipping to -20°C (-4°F) and maximums reaching up to 16°C (61°F). Expect 105 mm (4.1 in) of precipitation over approximately 17 days, contributing to an average humidity of 86%. Prepare accordingly for a chilly and damp month!
In December in Georgetown, the average temperature is -2°C (29°F), with maximums reaching up to 16°C (61°F) and minimums plummeting to -20°C (-4°F). Travelers should be prepared for a wide range of temperatures and pack accordingly for both chilly and mild conditions.
In Georgetown in December, the precipitation amount is 105 mm (4.1 in) over a period of 17 days.
In Georgetown in December humidity is 86%. With an average temperature of -2°C (29°F), this humidity feels like a damp chill that seeps through layers of clothing, making outdoor activities uncomfortable and travel plans challenging.
In Georgetown 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 Georgetown, you can visit Hourly UV Index in Georgetown.
UV Risk Categories
Weather in Georgetown varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Georgetown, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -5°C (24°F) | 94 mm (3.7 inches) | 90% | moderate |
| February Weather | -3°C (26°F) | 101 mm (4.0 inches) | 90% | moderate |
| March Weather | 0°C (33°F) | 96 mm (3.8 inches) | 87% | high |
| April Weather | 7°C (44°F) | 123 mm (4.8 inches) | 88% | very high |
| May Weather | 14°C (57°F) | 136 mm (5.3 inches) | 82% | very high |
| June Weather | 18°C (65°F) | 121 mm (4.8 inches) | 79% | very high |
| July Weather | 21°C (70°F) | 180 mm (7.1 inches) | 78% | very high |
| August Weather | 20°C (68°F) | 140 mm (5.5 inches) | 76% | very high |
| September Weather | 16°C (62°F) | 99 mm (3.9 inches) | 78% | very high |
| October Weather | 11°C (52°F) | 167 mm (6.6 inches) | 84% | high |
| November Weather | 3°C (37°F) | 110 mm (4.3 inches) | 89% | moderate |
| December Weather | -2°C (29°F) | 105 mm (4.1 inches) | 86% | low |