Last updated: June 24, 2025
In December, the average temperature in De Smet, United States hovers around -4°C (25°F). Expect chilly conditions, with minimums plunging to -26°C (-14°F) and maximums reaching as high as 14°C (58°F). Be prepared for light showers, as 30 mm (1.2 in) of precipitation typically falls over 5 days. With an average humidity of 81%, it's a crisp yet invigorating time to experience this locale.
In December in De Smet, the average temperature is -4°C (25°F), with maximums reaching up to 14°C (58°F) and minimums dropping as low as -26°C (-14°F). Travelers should be prepared for a wide range of temperatures, making it essential to pack appropriately for both chilly and milder conditions.
In De Smet in December, the precipitation amount is 30 mm (1.2 in) over the course of 5 days.
In De Smet in December humidity is 81%. With an average temperature of -4°C (25°F), this humidity feels like an icy blanket wrapping around you, making travel quite uncomfortable as each breath draws in a damp chill, often leaving you shivering and increasingly wary of the frosty air.
In De Smet 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 De Smet, you can visit Hourly UV Index in De Smet.
UV Risk Categories
Weather in De Smet varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in De Smet, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -9°C (16°F) | 20 mm (0.8 inches) | 81% | moderate |
| February Weather | -9°C (16°F) | 18 mm (0.7 inches) | 85% | moderate |
| March Weather | 0°C (32°F) | 55 mm (2.2 inches) | 76% | moderate |
| April Weather | 5°C (42°F) | 78 mm (3.1 inches) | 79% | very high |
| May Weather | 14°C (57°F) | 87 mm (3.4 inches) | 76% | very high |
| June Weather | 21°C (71°F) | 78 mm (3.1 inches) | 81% | very high |
| July Weather | 23°C (74°F) | 91 mm (3.6 inches) | 82% | very high |
| August Weather | 21°C (71°F) | 97 mm (3.8 inches) | 82% | very high |
| September Weather | 17°C (64°F) | 95 mm (3.7 inches) | 77% | very high |
| October Weather | 8°C (46°F) | 79 mm (3.1 inches) | 76% | moderate |
| November Weather | 1°C (34°F) | 22 mm (0.9 inches) | 84% | moderate |
| December Weather | -4°C (25°F) | 30 mm (1.2 inches) | 81% | low |