Last updated: June 24, 2025
In December, the average temperature in Arlington, United States hovers around -5°C (24°F), with a minimum drop to -25°C (-12°F) and a maximum rise to 15°C (59°F). During this month, you can expect approximately 43 mm (1.7 in) of precipitation spread over 6 days, while the average humidity remains high at 84%. Stay warm and prepared for the chill!
In December in Arlington, the average temperature is -5°C (24°F). Maximum temperatures can reach 15°C (59°F), while the minimum can drop as low as -25°C (-12°F). Travelers should be prepared for a wide range of temperatures, from chilly days to surprisingly warm spells.
In Arlington in December, the precipitation amount is 43 mm (1.7 in) over a period of 6 days.
In Arlington in December, humidity is 84%. With an average temperature of -5°C (24°F), this humidity feels like an icy blanket wrapped around you, making the air feel even colder and more biting, which can be quite uncomfortable for traveling.
In Arlington 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 Arlington, you can visit Hourly UV Index in Arlington.
UV Risk Categories
Weather in Arlington varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Arlington, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -9°C (17°F) | 30 mm (1.2 inches) | 87% | moderate |
| February Weather | -9°C (16°F) | 31 mm (1.2 inches) | 90% | moderate |
| March Weather | 1°C (33°F) | 64 mm (2.5 inches) | 85% | moderate |
| April Weather | 6°C (44°F) | 84 mm (3.3 inches) | 84% | very high |
| May Weather | 15°C (60°F) | 131 mm (5.2 inches) | 78% | very high |
| June Weather | 22°C (72°F) | 98 mm (3.9 inches) | 80% | very high |
| July Weather | 23°C (74°F) | 119 mm (4.7 inches) | 81% | very high |
| August Weather | 21°C (71°F) | 134 mm (5.3 inches) | 81% | very high |
| September Weather | 18°C (65°F) | 124 mm (4.9 inches) | 81% | very high |
| October Weather | 9°C (49°F) | 92 mm (3.6 inches) | 84% | moderate |
| November Weather | 1°C (34°F) | 32 mm (1.3 inches) | 88% | moderate |
| December Weather | -5°C (24°F) | 43 mm (1.7 inches) | 84% | low |