Last updated: June 24, 2025
The average temperature in Mound City, United States during December hovers around -5°C (23°F). However, temperatures can fluctuate dramatically, with a minimum of -27°C (-17°F) and a maximum of 16°C (62°F). Expect precipitation of approximately 26 mm (1.0 in) over about 5 days, accompanied by an average humidity level of 76%.
In December in Mound City, the average temperature is -5°C (23°F). The maximum can reach 16°C (62°F) and the minimum can be as low as -27°C (-17°F). Be prepared for a wide range of temperatures and pack accordingly for your travels.
In Mound City in December, the precipitation amount is 26 mm (1.0 in) over the course of 5 days.
In Mound City in December humidity is 76%. With an average temperature of -5°C (23°F), this humidity feels like an uncomfortable chill that seeps into your bones, making outdoor activities less enjoyable and requiring extra layers to stay warm while still feeling damp and clammy.
In Mound City 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 Mound City, you can visit Hourly UV Index in Mound City.
UV Risk Categories
Weather in Mound City varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Mound City, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -9°C (16°F) | 13 mm (0.5 inches) | 78% | low |
| February Weather | -10°C (13°F) | 17 mm (0.7 inches) | 81% | moderate |
| March Weather | -1°C (31°F) | 27 mm (1.1 inches) | 71% | moderate |
| April Weather | 5°C (41°F) | 42 mm (1.7 inches) | 73% | high |
| May Weather | 13°C (57°F) | 56 mm (2.2 inches) | 75% | very high |
| June Weather | 21°C (71°F) | 58 mm (2.3 inches) | 82% | very high |
| July Weather | 24°C (75°F) | 59 mm (2.3 inches) | 83% | very high |
| August Weather | 22°C (71°F) | 90 mm (3.6 inches) | 82% | very high |
| September Weather | 17°C (63°F) | 64 mm (2.5 inches) | 73% | very high |
| October Weather | 7°C (45°F) | 63 mm (2.5 inches) | 71% | moderate |
| November Weather | 0°C (32°F) | 14 mm (0.5 inches) | 78% | moderate |
| December Weather | -5°C (23°F) | 26 mm (1.0 inches) | 76% | low |