Last updated: June 24, 2025
In December, the average temperature in Three Rivers, United States hovers around 0°C (32°F). Visitors can expect temperatures to dip as low as -19°C (-3°F) and rise to a comfortable 17°C (62°F). The month brings about 125 mm (4.9 in) of precipitation over roughly 10 days, contributing to an average humidity of 81%. This blend of chilly weather and moisture sets a unique atmosphere for exploring the region.
In December in Three Rivers, the average temperature is 0°C (32°F). Maximum temperatures can reach 17°C (62°F), while minimums can drop to as low as -19°C (-3°F). Be prepared for a wide range of temperatures, making layered clothing essential for your travels.
In Three Rivers in December, the precipitation amount is 125 mm (4.9 in) spread over a period of 10 days.
In Three Rivers in December, humidity is 81%. With an average temperature of 0°C (32°F), this humidity feels like a damp chill that seeps into your bones, making outdoor activities less enjoyable and requiring extra layers to stay warm and dry while traveling.
In Three Rivers 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 Three Rivers, you can visit Hourly UV Index in Three Rivers.
UV Risk Categories
Weather in Three Rivers varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Three Rivers, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -2°C (28°F) | 72 mm (2.8 inches) | 86% | moderate |
| February Weather | -1°C (31°F) | 90 mm (3.6 inches) | 84% | moderate |
| March Weather | 2°C (36°F) | 82 mm (3.2 inches) | 82% | high |
| April Weather | 8°C (47°F) | 126 mm (4.9 inches) | 80% | very high |
| May Weather | 14°C (58°F) | 97 mm (3.8 inches) | 72% | very high |
| June Weather | 20°C (68°F) | 84 mm (3.3 inches) | 72% | very high |
| July Weather | 23°C (74°F) | 144 mm (5.7 inches) | 67% | very high |
| August Weather | 22°C (72°F) | 84 mm (3.3 inches) | 66% | very high |
| September Weather | 18°C (65°F) | 91 mm (3.6 inches) | 71% | very high |
| October Weather | 13°C (55°F) | 139 mm (5.5 inches) | 78% | high |
| November Weather | 5°C (41°F) | 95 mm (3.7 inches) | 84% | moderate |
| December Weather | 0°C (32°F) | 125 mm (4.9 inches) | 81% | low |