Last updated: June 24, 2025
In Colchester, United States during December, the average temperature is a chilly 1°C (35°F). Visitors should be prepared for a wide range of weather, as temperatures can dip to a minimum of -21°C (-5°F) and soar to a maximum of 22°C (72°F). Expect 47 mm (1.9 in) of precipitation spread over 6 days, with an average humidity of 84% making it feel even colder. Don't forget your layers!
In December in Colchester, the average temperature is 1°C (35°F). Maximum temperatures can reach 22°C (72°F), while the minimum can drop to as low as -21°C (-5°F). Be prepared for a wide range of temperatures when traveling to Colchester during this time.
In Colchester in December, the precipitation amount is 47 mm (1.9 in) over the course of 6 days.
In Colchester in December humidity is 84%. With an average temperature of 1°C (35°F), this humidity feels like a cold, damp chill that seeps into your bones, making it feel much colder than the thermometer suggests, which can be quite uncomfortable for traveling.
In Colchester 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 Colchester, you can visit Hourly UV Index in Colchester.
UV Risk Categories
Weather in Colchester varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Colchester, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -3°C (27°F) | 58 mm (2.3 inches) | 81% | moderate |
| February Weather | -2°C (29°F) | 65 mm (2.5 inches) | 81% | moderate |
| March Weather | 6°C (42°F) | 116 mm (4.6 inches) | 81% | high |
| April Weather | 11°C (51°F) | 105 mm (4.1 inches) | 82% | very high |
| May Weather | 18°C (64°F) | 169 mm (6.6 inches) | 78% | very high |
| June Weather | 24°C (75°F) | 136 mm (5.3 inches) | 81% | extreme |
| July Weather | 25°C (78°F) | 95 mm (3.7 inches) | 79% | very high |
| August Weather | 24°C (75°F) | 93 mm (3.7 inches) | 77% | very high |
| September Weather | 21°C (70°F) | 92 mm (3.6 inches) | 78% | very high |
| October Weather | 13°C (56°F) | 112 mm (4.4 inches) | 78% | high |
| November Weather | 5°C (41°F) | 53 mm (2.1 inches) | 87% | moderate |
| December Weather | 1°C (35°F) | 47 mm (1.9 inches) | 84% | low |