Last updated: June 24, 2025
In December, the average temperature in Lanham-Seabrook, United States is a brisk 5°C (41°F). Expect temperatures to range from a chilly -10°C (14°F) at their lowest to a pleasant 20°C (68°F) at their highest. With an overall precipitation amount of 92 mm (3.6 in) spread over 10 days, and an average humidity level of 84%, be prepared for a truly atmospheric experience!
In December in Lanham-Seabrook, the average temperature is 5°C (41°F). Maximums can reach 20°C (68°F) and minimums can drop to as low as -10°C (14°F). Be prepared for a mix of mild and chilly weather during your travels, so pack accordingly.
In Lanham-Seabrook in December, the total precipitation amount is 92 mm (3.6 in), which falls over the course of 10 days.
In Lanham-Seabrook 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 Lanham-Seabrook 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 Lanham-Seabrook, you can check the information here.
UV Risk Categories
Weather in Lanham-Seabrook varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Lanham-Seabrook, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 3°C (37°F) | 61 mm (2.4 inches) | 84% | moderate |
| February Weather | 5°C (41°F) | 99 mm (3.9 inches) | 83% | moderate |
| March Weather | 8°C (47°F) | 86 mm (3.4 inches) | 83% | high |
| April Weather | 14°C (57°F) | 101 mm (4.0 inches) | 81% | very high |
| May Weather | 19°C (66°F) | 134 mm (5.3 inches) | 78% | very high |
| June Weather | 24°C (75°F) | 118 mm (4.7 inches) | 79% | very high |
| July Weather | 27°C (80°F) | 191 mm (7.5 inches) | 74% | very high |
| August Weather | 25°C (78°F) | 168 mm (6.6 inches) | 72% | very high |
| September Weather | 22°C (72°F) | 107 mm (4.2 inches) | 75% | very high |
| October Weather | 17°C (63°F) | 115 mm (4.5 inches) | 81% | high |
| November Weather | 9°C (48°F) | 79 mm (3.1 inches) | 85% | moderate |
| December Weather | 5°C (41°F) | 92 mm (3.6 inches) | 84% | moderate |