Last updated: June 24, 2025
In December, the average temperature in Overlea, United States hovers around 5°C (41°F), with a range that dips to a chilly -9°C (16°F) and peaks at a mild 17°C (64°F). Expect 116 mm (4.6 in) of precipitation spread over 9 days, contributing to an average humidity level of 84%. Be prepared for the cool and damp conditions!
In December in Overlea, the average temperature is 5°C (41°F), with maximums reaching up to 17°C (64°F) and minimums dipping as low as -9°C (16°F). It's advisable to pack layers and prepare for chilly conditions, especially during the evenings.
In Overlea in December, the precipitation amount is 116 mm (4.6 in) spread over 9 days.
In Overlea in December humidity is 84%. With an average temperature of 5°C (41°F), this humidity feels like a damp chill that seeps into your bones, making traveling uncomfortable as you navigate through the cold, heavy air that clings to your skin.
In Overlea 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 Overlea, you can check the information here.
UV Risk Categories
Weather in Overlea varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Overlea, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 2°C (36°F) | 70 mm (2.8 inches) | 84% | moderate |
| February Weather | 4°C (39°F) | 117 mm (4.6 inches) | 83% | moderate |
| March Weather | 7°C (45°F) | 99 mm (3.9 inches) | 83% | high |
| April Weather | 13°C (55°F) | 114 mm (4.5 inches) | 81% | very high |
| May Weather | 18°C (65°F) | 145 mm (5.7 inches) | 78% | very high |
| June Weather | 23°C (74°F) | 106 mm (4.2 inches) | 79% | very high |
| July Weather | 27°C (80°F) | 151 mm (6.0 inches) | 74% | very high |
| August Weather | 25°C (78°F) | 143 mm (5.6 inches) | 72% | very high |
| September Weather | 22°C (72°F) | 111 mm (4.4 inches) | 75% | very high |
| October Weather | 17°C (63°F) | 123 mm (4.8 inches) | 81% | high |
| November Weather | 9°C (48°F) | 90 mm (3.6 inches) | 85% | moderate |
| December Weather | 5°C (41°F) | 116 mm (4.6 inches) | 84% | moderate |