Last updated: June 24, 2025
In December, the average temperature in Logan, United States hovers around 5°C (41°F). Expect chilly days with temperatures dipping as low as -13°C (8°F), and the occasional warmth reaching up to 20°C (69°F). With 129 mm (5.1 in) of precipitation spread over 12 days, you'll want to be prepared for some rain. Not to mention, the average humidity sits at a high 86%, creating a crisp and damp atmosphere.
In December, in Logan, the average temperature is 5°C (41°F). The maximum can reach 20°C (69°F), while the minimum can drop as low as -13°C (8°F). Be sure to pack for a range of temperatures if you plan to travel during this time.
In Logan in December, the total precipitation amount is 129 mm (5.1 in) over the course of 12 days.
In Logan in December humidity is 86%. With an average temperature of 5°C (41°F), this humidity feels like a heavy, damp blanket wrapping around you, making outdoor activities uncomfortable and travel quite challenging due to the chill combined with the stickiness in the air.
In Logan 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 Logan, you can check the information here.
UV Risk Categories
Weather in Logan varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Logan, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 2°C (37°F) | 102 mm (4.0 inches) | 87% | moderate |
| February Weather | 5°C (42°F) | 175 mm (6.9 inches) | 87% | high |
| March Weather | 9°C (48°F) | 132 mm (5.2 inches) | 86% | very high |
| April Weather | 13°C (56°F) | 142 mm (5.6 inches) | 84% | very high |
| May Weather | 18°C (65°F) | 149 mm (5.9 inches) | 83% | very high |
| June Weather | 22°C (71°F) | 163 mm (6.4 inches) | 83% | extreme |
| July Weather | 24°C (76°F) | 125 mm (4.9 inches) | 79% | extreme |
| August Weather | 23°C (74°F) | 119 mm (4.7 inches) | 66% | very high |
| September Weather | 21°C (70°F) | 106 mm (4.2 inches) | 68% | very high |
| October Weather | 15°C (60°F) | 128 mm (5.0 inches) | 78% | high |
| November Weather | 7°C (46°F) | 84 mm (3.3 inches) | 89% | moderate |
| December Weather | 5°C (41°F) | 129 mm (5.1 inches) | 86% | moderate |