Last updated: June 24, 2025
In December, the average temperature in Lamar, United States hovers around 5°C (42°F). Expect a minimum chill of -13°C (9°F) and the possibility of warming up to a comfortable 24°C (75°F). With 42 mm (1.7 in) of precipitation spread over 6 days, you might want to keep an umbrella handy. The air is notably humid, with an average humidity level of 87%, making it feel a bit cooler than it is.
In December in Lamar, the average temperature is 5°C (42°F), with maximums reaching up to 24°C (75°F) and minimums dropping as low as -13°C (9°F). Travelers should be prepared for a wide range of temperatures, so it's advisable to pack layers for comfort during your visit.
In Lamar in December, the total precipitation amount is 42 mm (1.7 in) spread over 6 days.
In Lamar in December humidity is 87%. With an average temperature of 5°C (42°F), this humidity feels like a damp chill that seeps into your bones, making outdoor activities less enjoyable and travel less inviting as the air becomes heavy and oppressive.
In Lamar 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 Lamar, you can check the information here.
UV Risk Categories
Weather in Lamar varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Lamar, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 2°C (35°F) | 71 mm (2.8 inches) | 81% | moderate |
| February Weather | 3°C (38°F) | 62 mm (2.5 inches) | 78% | moderate |
| March Weather | 10°C (50°F) | 136 mm (5.4 inches) | 76% | high |
| April Weather | 14°C (57°F) | 130 mm (5.1 inches) | 78% | very high |
| May Weather | 20°C (67°F) | 173 mm (6.8 inches) | 83% | very high |
| June Weather | 25°C (78°F) | 89 mm (3.5 inches) | 83% | extreme |
| July Weather | 27°C (81°F) | 94 mm (3.7 inches) | 78% | extreme |
| August Weather | 25°C (78°F) | 126 mm (5.0 inches) | 68% | very high |
| September Weather | 23°C (74°F) | 83 mm (3.3 inches) | 64% | very high |
| October Weather | 15°C (60°F) | 122 mm (4.8 inches) | 70% | high |
| November Weather | 8°C (47°F) | 55 mm (2.2 inches) | 83% | moderate |
| December Weather | 5°C (42°F) | 42 mm (1.7 inches) | 87% | moderate |