Last updated: June 24, 2025
In December, the average temperature in New Ulm, United States hovers around -4°C (25°F), with extreme lows plummeting to -24°C (-12°F) and occasional peaks reaching up to 17°C (62°F). During this month, you can expect a total precipitation of 41 mm (1.6 in) spread across about 6 days, all while battling high humidity levels averaging at 84%.
In December in New Ulm, the average temperature is -4°C (25°F). Maximums can reach 17°C (62°F), while minimums can drop as low as -24°C (-12°F). Travelers should be prepared for a wide range of temperatures during this time.
In New Ulm in December, the precipitation amount is 41 mm (1.6 in) over the course of 6 days.
In New Ulm in December, humidity is 84%. With an average temperature of -4°C (25°F), this humidity feels like a biting chill that seeps into your bones, making outdoor activities uncomfortable and travel less enjoyable.
In New Ulm in December, the maximum UV index is 2, which corresponds to a low exposure category. With this level of UV radiation, the time to burn is approximately 45 minutes. To learn more about the hourly UV index in New Ulm, you can visit Hourly UV Index in New Ulm.
UV Risk Categories
Weather in New Ulm varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in New Ulm, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -8°C (17°F) | 30 mm (1.2 inches) | 87% | moderate |
| February Weather | -9°C (16°F) | 31 mm (1.2 inches) | 90% | moderate |
| March Weather | 1°C (34°F) | 64 mm (2.5 inches) | 85% | moderate |
| April Weather | 7°C (44°F) | 84 mm (3.3 inches) | 84% | very high |
| May Weather | 15°C (60°F) | 130 mm (5.1 inches) | 78% | very high |
| June Weather | 22°C (73°F) | 109 mm (4.3 inches) | 80% | very high |
| July Weather | 24°C (75°F) | 123 mm (4.8 inches) | 81% | very high |
| August Weather | 22°C (71°F) | 113 mm (4.4 inches) | 81% | very high |
| September Weather | 18°C (65°F) | 128 mm (5.0 inches) | 81% | very high |
| October Weather | 9°C (49°F) | 96 mm (3.8 inches) | 84% | moderate |
| November Weather | 1°C (35°F) | 32 mm (1.3 inches) | 88% | moderate |
| December Weather | -4°C (25°F) | 41 mm (1.6 inches) | 84% | low |