Last updated: June 24, 2025
In December, the average temperature in Hartington, United States hovers around -2°C (29°F). Expect to face a chilly minimum of -24°C (-11°F), while temperatures can occasionally soar to a pleasant 18°C (65°F). With an average humidity of 83%, you might feel the cold more intensely. Be prepared for 45 mm (1.8 in) of precipitation over the course of 4 days, making it essential to pack accordingly!
In December in Hartington, the average temperature is -2°C (29°F), with maximums reaching 18°C (65°F) and minimums dropping as low as -24°C (-11°F). Travelers should prepare for a wide range of temperatures and pack accordingly to ensure comfort during their visit.
In Hartington in December, the total precipitation amount is 45 mm (1.8 in) over the course of 4 days.
In Hartington in December, humidity is 83%. With an average temperature of -2°C (29°F), this humidity feels like a biting chill that seeps into your bones, making travel outside feel particularly uncomfortable and brisk, as the damp air enhances the cold sensation, leaving you longing for warmth and shelter.
In Hartington 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 Hartington, you can visit Hourly UV Index in Hartington.
UV Risk Categories
Weather in Hartington varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Hartington, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -5°C (23°F) | 27 mm (1.1 inches) | 80% | moderate |
| February Weather | -5°C (23°F) | 26 mm (1.0 inches) | 84% | moderate |
| March Weather | 3°C (38°F) | 82 mm (3.2 inches) | 75% | high |
| April Weather | 8°C (47°F) | 84 mm (3.3 inches) | 79% | very high |
| May Weather | 15°C (60°F) | 157 mm (6.2 inches) | 74% | very high |
| June Weather | 23°C (74°F) | 96 mm (3.8 inches) | 81% | extreme |
| July Weather | 25°C (76°F) | 87 mm (3.4 inches) | 82% | very high |
| August Weather | 23°C (73°F) | 101 mm (4.0 inches) | 80% | very high |
| September Weather | 19°C (67°F) | 81 mm (3.2 inches) | 75% | very high |
| October Weather | 10°C (50°F) | 80 mm (3.2 inches) | 77% | high |
| November Weather | 3°C (38°F) | 23 mm (0.9 inches) | 85% | moderate |
| December Weather | -2°C (29°F) | 45 mm (1.8 inches) | 83% | low |