Last updated: June 24, 2025
In Stamford, United States, the average temperature in December hovers around -2°C (29°F). Visitors should be prepared for a wide range of temperatures, with a minimum of -22°C (-7°F) and a maximum reaching 16°C (62°F). Expect 93 mm (3.7 in) of precipitation spread across 13 days, contributing to an average humidity level of 84%. Whether you're braving the chill or enjoying the occasional warmth, this month's climate offers a unique experience.
In December in Stamford, the average temperature is -2°C (29°F), with maximums reaching 16°C (62°F) and minimums dropping as low as -22°C (-7°F). Travelers should be prepared for a wide range of temperatures and pack accordingly.
In Stamford in December, the total precipitation amount is 93 mm (3.7 in), which falls over the course of 13 days.
In Stamford in December, humidity is 84%. With an average temperature of -2°C (29°F), this humidity feels like an icy blanket that clings to your skin, making it difficult to stay warm and comfortable while traveling.
In Stamford 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 Stamford, you can visit Hourly UV Index in Stamford.
UV Risk Categories
Weather in Stamford varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Stamford, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -5°C (24°F) | 75 mm (2.9 inches) | 89% | moderate |
| February Weather | -3°C (27°F) | 93 mm (3.7 inches) | 88% | moderate |
| March Weather | 0°C (33°F) | 88 mm (3.4 inches) | 86% | high |
| April Weather | 7°C (44°F) | 115 mm (4.5 inches) | 84% | very high |
| May Weather | 13°C (56°F) | 115 mm (4.5 inches) | 76% | very high |
| June Weather | 18°C (65°F) | 99 mm (3.9 inches) | 72% | very high |
| July Weather | 21°C (70°F) | 118 mm (4.6 inches) | 66% | very high |
| August Weather | 20°C (68°F) | 110 mm (4.3 inches) | 64% | very high |
| September Weather | 16°C (62°F) | 96 mm (3.8 inches) | 72% | very high |
| October Weather | 11°C (51°F) | 137 mm (5.4 inches) | 81% | high |
| November Weather | 2°C (37°F) | 94 mm (3.7 inches) | 87% | moderate |
| December Weather | -2°C (29°F) | 93 mm (3.7 inches) | 84% | low |