Last updated: June 24, 2025
In December, the average temperature in Grayling, United States hovers around -3°C (26°F), with fluctuations ranging from a brisk -25°C (-13°F) to a mild 14°C (58°F). Expect approximately 71 mm (2.8 in) of precipitation spread over 15 days, contributing to an average humidity level of 89%. Stay warm and prepared for a mix of winter weather!
In December in Grayling, the average temperature is -3°C (26°F), with a maximum that can reach 14°C (58°F) and a minimum that can drop to -25°C (-13°F). Travelers should be prepared for a wide range of temperatures and dress in layers to stay comfortable during their visit.
In Grayling in December, the precipitation amount reaches 71 mm (2.8 in) over the course of 15 days.
In Grayling in December, humidity is 89%. With an average temperature of -3°C (26°F), this humidity feels like a biting chill that seeps into your bones, making travel uncomfortable and requiring layered clothing to stay warm as you explore.
In Grayling 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 Grayling, you can visit Hourly UV Index in Grayling.
UV Risk Categories
Weather in Grayling varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Grayling, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -7°C (20°F) | 54 mm (2.1 inches) | 92% | low |
| February Weather | -7°C (20°F) | 63 mm (2.5 inches) | 91% | moderate |
| March Weather | -1°C (30°F) | 59 mm (2.3 inches) | 87% | moderate |
| April Weather | 5°C (41°F) | 97 mm (3.8 inches) | 85% | high |
| May Weather | 13°C (55°F) | 112 mm (4.4 inches) | 79% | very high |
| June Weather | 18°C (65°F) | 130 mm (5.1 inches) | 75% | very high |
| July Weather | 21°C (70°F) | 99 mm (3.9 inches) | 75% | very high |
| August Weather | 20°C (67°F) | 101 mm (4.0 inches) | 75% | very high |
| September Weather | 15°C (60°F) | 79 mm (3.1 inches) | 79% | high |
| October Weather | 9°C (48°F) | 132 mm (5.2 inches) | 85% | moderate |
| November Weather | 1°C (34°F) | 70 mm (2.8 inches) | 88% | moderate |
| December Weather | -3°C (26°F) | 71 mm (2.8 inches) | 89% | low |