Last updated: June 24, 2025
In Diamondville, United States, the average temperature in December hovers around -6°C (21°F), with extremes ranging from a brisk -22°C (-6°F) to a milder 11°C (53°F). This month sees an average precipitation of 26 mm (1.0 in) spread over 7 days, contributing to a high average humidity of 88%. Prepare for chilly, damp conditions!
In December in Diamondville, the average temperature is -6°C (21°F), with maximums reaching 11°C (53°F) and minimums plunging to as low as -22°C (-6°F). Be prepared for a significant range in temperatures while traveling, so bring appropriate clothing for both the cold and milder days.
In Diamondville in December, the total precipitation amount is 26 mm (1.0 in) spread over a period of 7 days.
In Diamondville in December, humidity is 88%. With an average temperature of -6°C (21°F), this humidity feels like an intense chill that seeps into your bones, making outdoor activities uncomfortable and requiring extra layers to stay warm.
In Diamondville 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 Diamondville, you can check the information here.
UV Risk Categories
Weather in Diamondville varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Diamondville, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -7°C (19°F) | 33 mm (1.3 inches) | 91% | moderate |
| February Weather | -6°C (22°F) | 39 mm (1.5 inches) | 92% | high |
| March Weather | -1°C (30°F) | 41 mm (1.6 inches) | 84% | high |
| April Weather | 3°C (38°F) | 49 mm (1.9 inches) | 74% | very high |
| May Weather | 9°C (49°F) | 70 mm (2.7 inches) | 62% | extreme |
| June Weather | 17°C (62°F) | 22 mm (0.9 inches) | 56% | extreme |
| July Weather | 21°C (71°F) | 20 mm (0.8 inches) | 44% | extreme |
| August Weather | 20°C (68°F) | 24 mm (1.0 inches) | 37% | extreme |
| September Weather | 14°C (58°F) | 31 mm (1.2 inches) | 46% | very high |
| October Weather | 5°C (41°F) | 29 mm (1.1 inches) | 67% | high |
| November Weather | 0°C (32°F) | 35 mm (1.4 inches) | 84% | moderate |
| December Weather | -6°C (21°F) | 26 mm (1.0 inches) | 88% | moderate |