Last updated: June 24, 2025
In Denison, United States, the average temperature in December hovers around -2°C (29°F). However, temperatures can swing dramatically, with a minimum drop to -24°C (-11°F) and a maximum rise to a surprising 21°C (70°F). During this month, expect about 38 mm (1.5 in) of precipitation, typically over 4 days, and the air will feel quite humid, with an average humidity of 83%. Stay prepared for the fluctuations!
In December in Denison, the average temperature is -2°C (29°F), with maximums reaching 21°C (70°F) and minimums plummeting to -24°C (-11°F). This temperature range suggests that travelers should be prepared for a wide variation in weather conditions, packing accordingly to enjoy their stay comfortably.
In Denison in December, the total precipitation amount is 38 mm (1.5 in) spread over the course of 4 days.
In Denison in December, humidity is 83%. With an average temperature of -2°C (29°F), this humidity feels like a biting chill that seeps into your bones, making travel outside feel particularly uncomfortable and brisk, as the damp air enhances the cold sensation, leaving you longing for warmth and shelter.
In Denison 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 Denison, you can visit Hourly UV Index in Denison.
UV Risk Categories
Weather in Denison varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Denison, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -5°C (23°F) | 27 mm (1.1 inches) | 76% | moderate |
| February Weather | -5°C (23°F) | 39 mm (1.5 inches) | 80% | moderate |
| March Weather | 4°C (39°F) | 79 mm (3.1 inches) | 73% | high |
| April Weather | 9°C (48°F) | 66 mm (2.6 inches) | 74% | very high |
| May Weather | 16°C (61°F) | 161 mm (6.3 inches) | 78% | very high |
| June Weather | 23°C (74°F) | 105 mm (4.1 inches) | 82% | extreme |
| July Weather | 24°C (76°F) | 65 mm (2.6 inches) | 83% | very high |
| August Weather | 23°C (73°F) | 112 mm (4.4 inches) | 80% | very high |
| September Weather | 20°C (68°F) | 100 mm (3.9 inches) | 75% | very high |
| October Weather | 10°C (51°F) | 117 mm (4.6 inches) | 75% | high |
| November Weather | 3°C (38°F) | 32 mm (1.3 inches) | 82% | moderate |
| December Weather | -2°C (29°F) | 38 mm (1.5 inches) | 83% | low |