Last updated: June 24, 2025
In December, the average temperature in Mount Jackson, United States is around 3°C (38°F). During this time, temperatures can dip as low as -14°C (7°F), while reaching a maximum of 20°C (69°F). Expect 81 mm (3.2 in) of precipitation spread across approximately 8 days, contributing to an average humidity level of 85%. Prepare accordingly for chilly days and expect the occasional rain!
In December in Mount Jackson, the average temperature is 3°C (38°F). Maximums can reach 20°C (69°F), while minimums can be as low as -14°C (7°F). Be prepared for a wide range of temperatures, making it essential to pack layers for your travels.
In Mount Jackson in December, the precipitation amount is 81 mm (3.2 in) over the course of 8 days.
In Mount Jackson in December, humidity is 85%. With an average temperature of 3°C (38°F), this humidity feels like a damp chill that seeps into your bones, making outdoor activities uncomfortable and travel less enjoyable as you contend with the heavy, cold air surrounding you.
In Mount Jackson 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 Mount Jackson, you can check the information here.
UV Risk Categories
Weather in Mount Jackson varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Mount Jackson, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 1°C (34°F) | 56 mm (2.2 inches) | 86% | moderate |
| February Weather | 4°C (39°F) | 87 mm (3.4 inches) | 86% | moderate |
| March Weather | 6°C (44°F) | 67 mm (2.6 inches) | 86% | high |
| April Weather | 12°C (54°F) | 95 mm (3.7 inches) | 84% | very high |
| May Weather | 17°C (63°F) | 106 mm (4.2 inches) | 78% | very high |
| June Weather | 21°C (71°F) | 93 mm (3.7 inches) | 79% | very high |
| July Weather | 25°C (76°F) | 73 mm (2.9 inches) | 70% | very high |
| August Weather | 23°C (74°F) | 89 mm (3.5 inches) | 59% | very high |
| September Weather | 20°C (68°F) | 95 mm (3.8 inches) | 68% | very high |
| October Weather | 14°C (58°F) | 96 mm (3.8 inches) | 80% | high |
| November Weather | 6°C (43°F) | 70 mm (2.8 inches) | 86% | moderate |
| December Weather | 3°C (38°F) | 81 mm (3.2 inches) | 85% | moderate |