Last updated: June 24, 2025
In December, the average temperature in Green Mountain Falls, United States hovers around -4°C (24°F), with fluctuations between a minimum of -24°C (-10°F) and a maximum of 17°C (63°F). This month experiences an average precipitation of 14 mm (0.5 in) over approximately 4 days, with a notable average humidity of 89%, adding a crisp chill to the air.
In December in Green Mountain Falls, the average temperature is -4°C (24°F), with maximums reaching 17°C (63°F) and minimums dropping as low as -24°C (-10°F). Be prepared for a wide range of temperatures and pack accordingly for your trip.
In Green Mountain Falls in December, the precipitation amount is 14 mm (0.5 in) over a span of 4 days.
In Green Mountain Falls in December, humidity is 89%. With an average temperature of -4°C (24°F), this humidity feels like an unexpected chill that can make outdoor activities uncomfortable, turning even short walks into a brisk challenge as the dampness seeps into your clothing.
In Green Mountain Falls in December, the maximum UV index reaches 4, which corresponds to a moderate Exposure Category. With a time to burn of 30 minutes, it’s important to take precautions to protect your skin. You can find more details in the Hourly UV Index in Green Mountain Falls for better planning.
UV Risk Categories
Weather in Green Mountain Falls varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Green Mountain Falls, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -6°C (22°F) | 19 mm (0.7 inches) | 88% | moderate |
| February Weather | -6°C (21°F) | 26 mm (1.0 inches) | 87% | high |
| March Weather | -1°C (31°F) | 55 mm (2.2 inches) | 81% | very high |
| April Weather | 3°C (37°F) | 55 mm (2.1 inches) | 76% | extreme |
| May Weather | 8°C (48°F) | 101 mm (4.0 inches) | 66% | extreme |
| June Weather | 15°C (60°F) | 65 mm (2.5 inches) | 58% | extreme |
| July Weather | 18°C (64°F) | 118 mm (4.7 inches) | 52% | extreme |
| August Weather | 17°C (63°F) | 75 mm (2.9 inches) | 56% | extreme |
| September Weather | 14°C (57°F) | 48 mm (1.9 inches) | 65% | very high |
| October Weather | 5°C (42°F) | 37 mm (1.5 inches) | 76% | high |
| November Weather | 0°C (33°F) | 23 mm (0.9 inches) | 82% | moderate |
| December Weather | -4°C (24°F) | 14 mm (0.5 inches) | 89% | moderate |