Last updated: June 24, 2025
In Saybrook, United States, the average temperature for December hovers around 1°C (35°F). Expect some chilly days, with minimums plunging to -21°C (-6°F) and maximums reaching 19°C (66°F). This month typically sees around 54 mm (2.1 in) of precipitation spread over 8 days, contributing to an average humidity of 84%. Stay prepared for diverse weather!
In December in Saybrook, the average temperature is 1°C (35°F), with maximums reaching 19°C (66°F) and minimums dropping as low as -21°C (-6°F). This varied climate means you should pack for both warm and chilly conditions when traveling to Saybrook during this time.
In Saybrook in December, the total precipitation amount reaches 54 mm (2.1 in) over a span of 8 days.
In Saybrook 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 Saybrook 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 Saybrook, you can visit Hourly UV Index in Saybrook.
UV Risk Categories
Weather in Saybrook varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Saybrook, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -3°C (28°F) | 67 mm (2.6 inches) | 82% | moderate |
| February Weather | -1°C (30°F) | 71 mm (2.8 inches) | 83% | moderate |
| March Weather | 5°C (42°F) | 112 mm (4.4 inches) | 84% | high |
| April Weather | 11°C (51°F) | 116 mm (4.6 inches) | 85% | very high |
| May Weather | 18°C (64°F) | 151 mm (5.9 inches) | 79% | very high |
| June Weather | 23°C (74°F) | 110 mm (4.3 inches) | 82% | extreme |
| July Weather | 25°C (77°F) | 87 mm (3.4 inches) | 80% | very high |
| August Weather | 23°C (74°F) | 99 mm (3.9 inches) | 81% | very high |
| September Weather | 21°C (70°F) | 67 mm (2.7 inches) | 80% | very high |
| October Weather | 14°C (57°F) | 123 mm (4.8 inches) | 82% | high |
| November Weather | 5°C (41°F) | 65 mm (2.6 inches) | 88% | moderate |
| December Weather | 1°C (35°F) | 54 mm (2.1 inches) | 84% | low |