Last updated: June 24, 2025
In December, the average temperature in Bonne Terre, United States hovers around 4°C (40°F). However, brace yourself for a temperature range that can drop to a chilling -15°C (5°F) and rise to a pleasant 25°C (78°F). Expect about 67 mm (2.7 in) of precipitation over the course of 7 days, with humidity levels peaking at a remarkable 86%.
In December in Bonne Terre, the average temperature is 4°C (40°F). Maximums can reach 25°C (78°F) and minimums can be as low as -15°C (5°F). It is advisable to pack layers for your travels, as you may experience both chilly and warm conditions.
In Bonne Terre in December, the precipitation amount is 67 mm (2.7 in) over a span of 7 days.
In Bonne Terre in December humidity is 86%. With an average temperature of 4°C (40°F), this humidity feels like a damp chill that seeps into your bones, making outdoor activities uncomfortable and travel cumbersome as you navigate through a thick, heavy air that clings to your skin.
In Bonne Terre 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 Bonne Terre, you can check the information here.
UV Risk Categories
Weather in Bonne Terre varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Bonne Terre, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 1°C (34°F) | 77 mm (3.0 inches) | 83% | moderate |
| February Weather | 3°C (37°F) | 92 mm (3.6 inches) | 81% | high |
| March Weather | 9°C (48°F) | 131 mm (5.2 inches) | 80% | high |
| April Weather | 13°C (55°F) | 150 mm (5.9 inches) | 80% | very high |
| May Weather | 19°C (67°F) | 151 mm (5.9 inches) | 83% | extreme |
| June Weather | 24°C (76°F) | 85 mm (3.4 inches) | 83% | extreme |
| July Weather | 26°C (79°F) | 88 mm (3.5 inches) | 76% | extreme |
| August Weather | 24°C (76°F) | 117 mm (4.6 inches) | 69% | very high |
| September Weather | 22°C (72°F) | 68 mm (2.7 inches) | 68% | very high |
| October Weather | 15°C (59°F) | 111 mm (4.4 inches) | 72% | high |
| November Weather | 7°C (45°F) | 73 mm (2.9 inches) | 83% | moderate |
| December Weather | 4°C (40°F) | 67 mm (2.7 inches) | 86% | moderate |