Last updated: June 24, 2025
In Morrison, United States, the average temperature in December hovers around 6°C (43°F). However, prepare for variability: the minimum can plunge to -9°C (15°F), while the maximum can reach a surprising 25°C (78°F). Expect around 35 mm (1.4 in) of precipitation spread over 4 days, with an average humidity of 85%, creating a notably damp atmosphere.
In December in Morrison, the average temperature is 6°C (43°F), with maximums reaching 25°C (78°F) and minimums dipping as low as -9°C (15°F). This varied climate makes Morrison an intriguing destination for travelers seeking both warmth and the thrill of winter's chill.
In Morrison in December, the precipitation amount is 35 mm (1.4 in) over a span of 4 days.
In Morrison in December, humidity is 85%. With an average temperature of 6°C (43°F), this humidity feels like a damp chill that seeps into your bones, making travel feel more uncomfortable and limiting your enjoyment of the sights as you navigate the wet, brisk air.
In Morrison 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 Morrison, you can check the information here.
UV Risk Categories
Weather in Morrison varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Morrison, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 3°C (38°F) | 55 mm (2.2 inches) | 77% | moderate |
| February Weather | 4°C (40°F) | 42 mm (1.6 inches) | 76% | high |
| March Weather | 11°C (53°F) | 90 mm (3.5 inches) | 71% | high |
| April Weather | 15°C (59°F) | 104 mm (4.1 inches) | 73% | very high |
| May Weather | 21°C (69°F) | 149 mm (5.9 inches) | 83% | very high |
| June Weather | 26°C (79°F) | 104 mm (4.1 inches) | 83% | extreme |
| July Weather | 28°C (83°F) | 80 mm (3.2 inches) | 81% | extreme |
| August Weather | 27°C (81°F) | 99 mm (3.9 inches) | 73% | very high |
| September Weather | 24°C (76°F) | 84 mm (3.3 inches) | 67% | very high |
| October Weather | 16°C (61°F) | 110 mm (4.3 inches) | 72% | high |
| November Weather | 10°C (50°F) | 34 mm (1.3 inches) | 82% | moderate |
| December Weather | 6°C (43°F) | 35 mm (1.4 inches) | 85% | moderate |