Last updated: June 24, 2025
In December, the average temperature in Merrill, United States hovers around -1°C (31°F), with a minimum that can plummet to -24°C (-12°F) and a maximum reaching up to 17°C (62°F). Expect 61 mm (2.4 in) of precipitation spread over 10 days, contributing to an average humidity level of 86%. Be prepared for chilly but dynamic weather!
In December in Merrill, the average temperature is -1°C (31°F). The maximum can reach 17°C (62°F), while the minimum can drop to as low as -24°C (-12°F). It's advisable to pack warm clothing and be prepared for a wide range of temperatures when traveling during this time.
In Merrill in December, the precipitation amount is 61 mm (2.4 in) over a span of 10 days.
In Merrill in December humidity is 86%. With an average temperature of -1°C (31°F), this humidity feels like an eerie chill enveloping you, making travel uncomfortable as the damp air bites into your skin and the cold seeps through even the warmest of clothes, creating an atmosphere that is heavy and uninviting.
In Merrill 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 Merrill, you can visit Hourly UV Index in Merrill.
UV Risk Categories
Weather in Merrill varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Merrill, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -4°C (25°F) | 55 mm (2.2 inches) | 88% | low |
| February Weather | -4°C (26°F) | 59 mm (2.3 inches) | 87% | moderate |
| March Weather | 2°C (35°F) | 59 mm (2.3 inches) | 85% | moderate |
| April Weather | 7°C (46°F) | 86 mm (3.4 inches) | 86% | very high |
| May Weather | 15°C (59°F) | 114 mm (4.5 inches) | 80% | very high |
| June Weather | 20°C (69°F) | 114 mm (4.5 inches) | 80% | very high |
| July Weather | 23°C (74°F) | 70 mm (2.7 inches) | 80% | very high |
| August Weather | 22°C (71°F) | 86 mm (3.4 inches) | 80% | very high |
| September Weather | 18°C (64°F) | 96 mm (3.8 inches) | 80% | high |
| October Weather | 11°C (52°F) | 117 mm (4.6 inches) | 84% | moderate |
| November Weather | 3°C (38°F) | 59 mm (2.3 inches) | 89% | moderate |
| December Weather | -1°C (31°F) | 61 mm (2.4 inches) | 86% | low |