Last updated: June 24, 2025
In December, the average temperature in Havre de Grace, United States hovers around 5°C (41°F), with a minimum of -10°C (15°F) and a maximum reaching 18°C (65°F). Expect about 98 mm (3.9 in) of precipitation spread over 9 days, and a high average humidity of 84%. Prepare for a chilly and damp month!
In December in Havre de Grace, the average temperature is 5°C (41°F). Maximums can reach 18°C (65°F), while minimums can drop as low as -10°C (15°F). Be prepared for a wide range of temperatures and pack accordingly for your travels.
In Havre de Grace in December, the precipitation amount is 98 mm (3.9 in) spread over a duration of 9 days.
In Havre de Grace 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 Havre de Grace 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 Havre de Grace, you can check the information here.
UV Risk Categories
Weather in Havre de Grace varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Havre de Grace, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 2°C (36°F) | 60 mm (2.4 inches) | 84% | moderate |
| February Weather | 4°C (40°F) | 97 mm (3.8 inches) | 83% | moderate |
| March Weather | 7°C (45°F) | 97 mm (3.8 inches) | 83% | high |
| April Weather | 13°C (56°F) | 100 mm (3.9 inches) | 81% | very high |
| May Weather | 18°C (65°F) | 134 mm (5.3 inches) | 78% | very high |
| June Weather | 24°C (75°F) | 96 mm (3.8 inches) | 79% | very high |
| July Weather | 27°C (80°F) | 129 mm (5.1 inches) | 74% | very high |
| August Weather | 25°C (78°F) | 133 mm (5.2 inches) | 72% | very high |
| September Weather | 22°C (72°F) | 94 mm (3.7 inches) | 75% | very high |
| October Weather | 17°C (62°F) | 104 mm (4.1 inches) | 81% | high |
| November Weather | 9°C (48°F) | 81 mm (3.2 inches) | 85% | moderate |
| December Weather | 5°C (41°F) | 98 mm (3.9 inches) | 84% | moderate |