Last updated: June 24, 2025
In December, the average temperature in MacArthur, United States hovers around 4°C (39°F), with fluctuations ranging from a minimum of -17°C (2°F) to a maximum of 19°C (67°F). During this month, you can expect approximately 116 mm (4.6 in) of precipitation spread across 12 days, contributing to a high average humidity of 86%.
In December in MacArthur, the average temperature is 4°C (39°F). The maximum can reach 19°C (67°F), while the minimum can drop as low as -17°C (2°F). Travelers should be prepared for a wide range of temperatures, from chilly to mild, when visiting during this time.
In MacArthur in December, the precipitation amount is 116 mm (4.6 in) over a span of 12 days.
In MacArthur in December humidity is 86%. With an average temperature of 4°C (39°F), this humidity feels like a chilly mist enveloping you, making it essential to bundle up while exploring, as each breath comes with a damp chill that can be quite refreshing yet starkly invigorating for travelers.
In MacArthur 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 MacArthur, you can check the information here.
UV Risk Categories
Weather in MacArthur varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in MacArthur, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 1°C (34°F) | 95 mm (3.7 inches) | 87% | moderate |
| February Weather | 4°C (40°F) | 160 mm (6.3 inches) | 87% | high |
| March Weather | 7°C (45°F) | 123 mm (4.8 inches) | 86% | very high |
| April Weather | 11°C (53°F) | 135 mm (5.3 inches) | 84% | very high |
| May Weather | 17°C (62°F) | 163 mm (6.4 inches) | 83% | extreme |
| June Weather | 20°C (68°F) | 133 mm (5.2 inches) | 83% | extreme |
| July Weather | 22°C (73°F) | 110 mm (4.3 inches) | 79% | extreme |
| August Weather | 21°C (71°F) | 106 mm (4.2 inches) | 66% | very high |
| September Weather | 19°C (67°F) | 99 mm (3.9 inches) | 68% | very high |
| October Weather | 14°C (57°F) | 129 mm (5.1 inches) | 78% | high |
| November Weather | 6°C (43°F) | 79 mm (3.1 inches) | 89% | moderate |
| December Weather | 4°C (39°F) | 116 mm (4.6 inches) | 86% | moderate |