Last updated: June 18, 2025
In December, the average temperature in Millbrook, Canada hovers around -3°C (27°F), with extremes ranging from a chilly -29°C (-19°F) to a surprisingly mild 15°C (60°F). Expect 74 mm (2.9 in) of precipitation spread over 12 days, contributing to an average humidity level of 91%. Stay warm and prepare for wet conditions!
In December in Millbrook, the average temperature is -3°C (27°F), with maximums reaching up to 15°C (60°F) and minimums dipping as low as -29°C (-19°F). This wide temperature range means travelers should be prepared for both chilly and relatively mild conditions.
In Millbrook in December, the precipitation amount is 74 mm (2.9 in) over a span of 12 days.
In Millbrook in December humidity is 91%. With an average temperature of -3°C (27°F), this humidity feels like a thick, icy blanket wrapping around you, making travel quite uncomfortable as every breath is a mix of frigid air and moisture, and the cold dampness clings to your skin, turning even short outings into a test of endurance.
In Millbrook 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 Millbrook, you can visit Hourly UV Index in Millbrook.
UV Risk Categories
Weather in Millbrook varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Millbrook, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -6°C (21°F) | 66 mm (2.6 inches) | 93% | low |
| February Weather | -5°C (23°F) | 72 mm (2.8 inches) | 94% | moderate |
| March Weather | -1°C (31°F) | 66 mm (2.6 inches) | 87% | moderate |
| April Weather | 6°C (42°F) | 117 mm (4.6 inches) | 82% | very high |
| May Weather | 13°C (56°F) | 106 mm (4.2 inches) | 74% | very high |
| June Weather | 19°C (66°F) | 104 mm (4.1 inches) | 68% | very high |
| July Weather | 22°C (71°F) | 99 mm (3.9 inches) | 67% | very high |
| August Weather | 20°C (69°F) | 121 mm (4.7 inches) | 67% | very high |
| September Weather | 16°C (62°F) | 79 mm (3.1 inches) | 74% | high |
| October Weather | 10°C (50°F) | 106 mm (4.2 inches) | 83% | moderate |
| November Weather | 2°C (36°F) | 83 mm (3.3 inches) | 89% | moderate |
| December Weather | -3°C (27°F) | 74 mm (2.9 inches) | 91% | low |