Last updated: June 24, 2025
In December, the average temperature in Morton, United States hovers around 1°C (35°F), with range extremes reaching a brisk -21°C (-5°F) on chilly nights, while the thermometers can climb up to a pleasant 20°C (68°F) during the day. Expect 55 mm (2.2 in) of precipitation spread over 7 days, accompanied by an average humidity of 84%, creating a cool and crisp atmosphere throughout the month.
In December in Morton, the average temperature is 1°C (35°F), with maximums reaching up to 20°C (68°F) and minimums dropping as low as -21°C (-5°F). Travelers should be prepared for a wide range of temperatures and pack accordingly for both warm and cold weather.
In Morton in December, the precipitation amount is 55 mm (2.2 in) over the course of 7 days.
In Morton in December humidity is 84%. With an average temperature of 1°C (35°F), this humidity feels like a cold, damp chill that seeps into your bones, making it feel much colder than the thermometer suggests, which can be quite uncomfortable for traveling.
In Morton 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 Morton, you can visit Hourly UV Index in Morton.
UV Risk Categories
Weather in Morton varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Morton, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -3°C (27°F) | 64 mm (2.5 inches) | 82% | moderate |
| February Weather | -1°C (30°F) | 69 mm (2.7 inches) | 83% | moderate |
| March Weather | 6°C (42°F) | 115 mm (4.5 inches) | 84% | high |
| April Weather | 11°C (52°F) | 118 mm (4.7 inches) | 85% | very high |
| May Weather | 18°C (65°F) | 164 mm (6.4 inches) | 79% | very high |
| June Weather | 23°C (74°F) | 139 mm (5.5 inches) | 82% | extreme |
| July Weather | 25°C (77°F) | 114 mm (4.5 inches) | 80% | very high |
| August Weather | 23°C (75°F) | 90 mm (3.5 inches) | 81% | very high |
| September Weather | 21°C (70°F) | 65 mm (2.6 inches) | 80% | very high |
| October Weather | 13°C (57°F) | 123 mm (4.8 inches) | 82% | high |
| November Weather | 5°C (41°F) | 60 mm (2.4 inches) | 88% | moderate |
| December Weather | 1°C (35°F) | 55 mm (2.2 inches) | 84% | low |