Last updated: June 24, 2025
In December, the average temperature in Grand Tower, United States hovers around 5°C (41°F). Expect a minimum chill of -14°C (7°F) to a pleasant maximum of 23°C (74°F). During this month, typical precipitation totals 82 mm (3.2 in), falling over approximately 8 days. Coupled with an average humidity of 88%, be prepared for a damp and cool environment!
In December in Grand Tower, the average temperature is 5°C (41°F). Maximum temperatures can reach 23°C (74°F), while the minimum can drop as low as -14°C (7°F). Be prepared for a wide range of temperatures when traveling during this month.
In Grand Tower in December, the total precipitation amount reached 82 mm (3.2 in) over the course of 8 days.
In Grand Tower in December humidity is 88%. With an average temperature of 5°C (41°F), this humidity feels like a damp chill that seeps into your bones, making it essential to bundle up for your travels, as every breath feels heavy in the air and the landscape appears cloaked in a misty shroud.
In Grand Tower in December, the maximum UV index is 3, which corresponds to a moderate Exposure Category. The time to burn is approximately 30 minutes. For more details on the hourly UV index in Grand Tower, you can check the information here.
UV Risk Categories
Weather in Grand Tower varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Grand Tower, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 2°C (35°F) | 95 mm (3.7 inches) | 86% | moderate |
| February Weather | 3°C (38°F) | 111 mm (4.4 inches) | 84% | high |
| March Weather | 9°C (49°F) | 143 mm (5.6 inches) | 84% | high |
| April Weather | 14°C (57°F) | 150 mm (5.9 inches) | 80% | very high |
| May Weather | 20°C (68°F) | 145 mm (5.7 inches) | 82% | extreme |
| June Weather | 25°C (77°F) | 88 mm (3.5 inches) | 83% | extreme |
| July Weather | 27°C (80°F) | 89 mm (3.5 inches) | 79% | very high |
| August Weather | 25°C (77°F) | 94 mm (3.7 inches) | 76% | very high |
| September Weather | 23°C (73°F) | 74 mm (2.9 inches) | 75% | very high |
| October Weather | 16°C (61°F) | 115 mm (4.5 inches) | 74% | high |
| November Weather | 7°C (46°F) | 89 mm (3.5 inches) | 85% | moderate |
| December Weather | 5°C (41°F) | 82 mm (3.2 inches) | 88% | moderate |