Last updated: June 24, 2025
In December, the average temperature in Bloomfield, United States hovers around 4°C (39°F). Temperatures can swing dramatically, with a minimum of -17°C (1°F) and a maximum reaching 20°C (68°F). Visitors should also prepare for some precipitation, as 104 mm (4.1 in) of rain typically falls over 9 days. With an average humidity of 87%, it's a month where warm layers and waterproof gear are highly recommended!
In December in Bloomfield, the average temperature is 4°C (39°F). Maximum temperatures can reach 20°C (68°F), while minimum temperatures can drop as low as -17°C (1°F). Travelers should be prepared for a range of weather conditions, from mild to quite cold, when visiting during this time.
In Bloomfield in December, the precipitation amount is 104 mm (4.1 in) over the course of 9 days.
In Bloomfield in December, humidity is 87%. With an average temperature of 4°C (39°F), this humidity feels like a damp chill that seeps into your bones, making travel uncomfortable and gritty, as the air hangs heavy and clings to your skin.
In Bloomfield in December, the maximum UV index is 3, which corresponds to a moderate Exposure Category. The time to burn is approximately 30 minutes. For more details on the hourly UV index in Bloomfield, you can check the information here.
UV Risk Categories
Weather in Bloomfield varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Bloomfield, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 0°C (33°F) | 94 mm (3.7 inches) | 87% | moderate |
| February Weather | 2°C (36°F) | 114 mm (4.5 inches) | 85% | moderate |
| March Weather | 7°C (46°F) | 135 mm (5.3 inches) | 86% | high |
| April Weather | 12°C (54°F) | 123 mm (4.8 inches) | 84% | very high |
| May Weather | 19°C (67°F) | 139 mm (5.5 inches) | 79% | very high |
| June Weather | 24°C (75°F) | 127 mm (5.0 inches) | 82% | extreme |
| July Weather | 26°C (78°F) | 106 mm (4.2 inches) | 79% | very high |
| August Weather | 24°C (76°F) | 101 mm (4.0 inches) | 70% | very high |
| September Weather | 22°C (72°F) | 67 mm (2.7 inches) | 69% | very high |
| October Weather | 15°C (60°F) | 99 mm (3.9 inches) | 76% | high |
| November Weather | 6°C (43°F) | 107 mm (4.2 inches) | 88% | moderate |
| December Weather | 4°C (39°F) | 104 mm (4.1 inches) | 87% | moderate |