Last updated: June 24, 2025
In December, the average temperature in Le Mars, United States hovers around -2°C (28°F), with a notable range; it can dip as low as -24°C (-10°F) or rise to a pleasant 19°C (66°F). Expect about 40 mm (1.6 in) of precipitation spread across approximately 4 days, contributing to the 83% average humidity that defines this chill month.
In December in Le Mars, the average temperature is -2°C (28°F), with maximums reaching up to 19°C (66°F) and minimums dropping as low as -24°C (-10°F). Be prepared for a wide range of temperatures during your travels, ensuring you pack appropriate clothing for both warmer and colder conditions.
In Le Mars in December, the precipitation amount is 40 mm (1.6 in) spread over a duration of 4 days.
In Le Mars in December, humidity is 83%. With an average temperature of -2°C (28°F), this humidity feels like a biting chill that penetrates your clothes, making outdoor activities uncomfortable and travel challenging.
In Le Mars 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 Le Mars, you can check the information here.
UV Risk Categories
Weather in Le Mars varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Le Mars, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -6°C (22°F) | 27 mm (1.1 inches) | 80% | low |
| February Weather | -6°C (22°F) | 30 mm (1.2 inches) | 84% | moderate |
| March Weather | 3°C (37°F) | 76 mm (3.0 inches) | 75% | moderate |
| April Weather | 8°C (47°F) | 87 mm (3.4 inches) | 79% | very high |
| May Weather | 16°C (60°F) | 142 mm (5.6 inches) | 74% | very high |
| June Weather | 23°C (74°F) | 105 mm (4.1 inches) | 81% | extreme |
| July Weather | 24°C (76°F) | 70 mm (2.7 inches) | 82% | very high |
| August Weather | 22°C (73°F) | 105 mm (4.1 inches) | 80% | very high |
| September Weather | 19°C (67°F) | 105 mm (4.1 inches) | 75% | very high |
| October Weather | 10°C (50°F) | 78 mm (3.1 inches) | 77% | moderate |
| November Weather | 2°C (37°F) | 27 mm (1.1 inches) | 85% | moderate |
| December Weather | -2°C (28°F) | 40 mm (1.6 inches) | 83% | moderate |