Last updated: June 24, 2025
In Ortonville, United States, the average temperature in December hovers around 0°C (32°F). The conditions can be quite varied, with minimum temperatures dropping to -21°C (-6°F) and peaking at a comfortable 17°C (63°F). Expect some rain, as 53 mm (2.1 in) of precipitation falls over approximately 9 days. Additionally, the average humidity is quite high at 86%, making for a brisk yet damp atmosphere.
In December in Ortonville, the average temperature is 0°C (32°F). The maximum can reach 17°C (63°F), while the minimum can drop as low as -21°C (-6°F). Travelers should be prepared for a wide range of temperatures and dress accordingly.
In Ortonville in December, the total precipitation amount is 53 mm (2.1 in) spread over 9 days.
In Ortonville in December humidity is 86%. With an average temperature of 0°C (32°F), this humidity feels like a biting chill that seeps into your bones, making travel feel uncomfortable and damp, as the cold air combines with the moisture to create a brisk sensation that may deter outdoor exploration.
In Ortonville 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 Ortonville, you can visit Hourly UV Index in Ortonville.
UV Risk Categories
Weather in Ortonville varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Ortonville, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -4°C (26°F) | 63 mm (2.5 inches) | 88% | low |
| February Weather | -3°C (27°F) | 67 mm (2.6 inches) | 87% | moderate |
| March Weather | 2°C (36°F) | 68 mm (2.7 inches) | 85% | moderate |
| April Weather | 8°C (46°F) | 92 mm (3.6 inches) | 86% | very high |
| May Weather | 15°C (59°F) | 108 mm (4.3 inches) | 80% | very high |
| June Weather | 21°C (70°F) | 103 mm (4.1 inches) | 80% | very high |
| July Weather | 23°C (74°F) | 87 mm (3.4 inches) | 80% | very high |
| August Weather | 22°C (72°F) | 84 mm (3.3 inches) | 80% | very high |
| September Weather | 18°C (65°F) | 77 mm (3.0 inches) | 80% | high |
| October Weather | 12°C (53°F) | 106 mm (4.2 inches) | 84% | moderate |
| November Weather | 4°C (39°F) | 70 mm (2.7 inches) | 89% | moderate |
| December Weather | 0°C (32°F) | 53 mm (2.1 inches) | 86% | low |