Last updated: June 24, 2025
In December, the average temperature in Dallas City, United States hovers around 1°C (34°F), with extremes ranging from a chilly -21°C (-6°F) to a surprisingly warm 22°C (72°F). Expect 45 mm (1.8 in) of precipitation over approximately 5 days, contributing to a high average humidity of 84%. Stay prepared for a mix of cold and warmth during this distinctive month!
In December in Dallas City, the average temperature is 1°C (34°F). The maximum can reach 22°C (72°F) and the minimum can be as low as -21°C (-6°F). Travelers should be prepared for a wide range of temperatures and pack accordingly.
In Dallas City in December, the total precipitation amount is 45 mm (1.8 in) over a span of 5 days.
In Dallas City in December humidity is 84%. With an average temperature of 1°C (34°F), this humidity feels like a biting chill that seeps into your bones, making travel uncomfortable and requiring extra layers to keep warm while navigating the damp air.
In Dallas City 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 Dallas City, you can visit Hourly UV Index in Dallas City.
UV Risk Categories
Weather in Dallas City varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Dallas City, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -3°C (26°F) | 56 mm (2.2 inches) | 81% | moderate |
| February Weather | -2°C (29°F) | 60 mm (2.3 inches) | 81% | moderate |
| March Weather | 5°C (42°F) | 97 mm (3.8 inches) | 81% | high |
| April Weather | 10°C (51°F) | 92 mm (3.6 inches) | 82% | very high |
| May Weather | 18°C (64°F) | 168 mm (6.6 inches) | 78% | very high |
| June Weather | 24°C (75°F) | 131 mm (5.1 inches) | 81% | extreme |
| July Weather | 26°C (78°F) | 79 mm (3.1 inches) | 79% | very high |
| August Weather | 24°C (75°F) | 75 mm (3.0 inches) | 77% | very high |
| September Weather | 21°C (70°F) | 100 mm (4.0 inches) | 78% | very high |
| October Weather | 13°C (56°F) | 123 mm (4.8 inches) | 78% | high |
| November Weather | 5°C (41°F) | 51 mm (2.0 inches) | 87% | moderate |
| December Weather | 1°C (34°F) | 45 mm (1.8 inches) | 84% | low |