Last updated: June 24, 2025
In December, the average temperature in Harvey, United States hovers around -8°C (18°F). With minimums plunging to -36°C (-33°F) and maximums peaking at 11°C (53°F), this month can bring quite the weather extremes. Expect 27 mm (1.1 in) of precipitation spread over 6 days, contributing to an average humidity level of 84%. Stay warm and prepared!
In December in Harvey, the average temperature is -8°C (18°F), with a maximum that can reach 11°C (53°F) and a minimum that can drop as low as -36°C (-33°F). Travelers should be prepared for extreme cold conditions and pack accordingly to fully enjoy their visit.
In Harvey in December, the precipitation amount is 27 mm (1.1 in) over a period of 6 days.
In Harvey in December humidity is 84%. With an average temperature of -8°C (18°F), this humidity feels like a biting chill that seeps into your bones, making outdoor exploration challenging and requiring extra layers for comfort.
In Harvey 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 Harvey, you can visit Hourly UV Index in Harvey.
UV Risk Categories
Weather in Harvey varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Harvey, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -11°C (12°F) | 15 mm (0.6 inches) | 84% | low |
| February Weather | -13°C (9°F) | 19 mm (0.7 inches) | 88% | moderate |
| March Weather | -3°C (27°F) | 25 mm (1.0 inches) | 78% | moderate |
| April Weather | 3°C (38°F) | 30 mm (1.2 inches) | 75% | very high |
| May Weather | 13°C (55°F) | 41 mm (1.6 inches) | 76% | very high |
| June Weather | 20°C (68°F) | 72 mm (2.9 inches) | 79% | very high |
| July Weather | 22°C (71°F) | 71 mm (2.8 inches) | 78% | very high |
| August Weather | 20°C (68°F) | 70 mm (2.7 inches) | 78% | very high |
| September Weather | 15°C (59°F) | 58 mm (2.3 inches) | 69% | high |
| October Weather | 6°C (43°F) | 59 mm (2.3 inches) | 71% | moderate |
| November Weather | -2°C (28°F) | 23 mm (0.9 inches) | 82% | moderate |
| December Weather | -8°C (18°F) | 27 mm (1.1 inches) | 84% | low |