Last updated: June 24, 2025
In Jasper, United States, the average temperature in December hovers around 10°C (49°F), with a minimum chill reaching -6°C (21°F) and a warm maximum of 25°C (76°F). Expect a moderate precipitation amount of 152 mm (6.0 in) over approximately 12 days, contributing to an average humidity level of 88%. Stay prepared for a mix of cool days and the occasional warmth in this charming locale!
In December in Jasper, the average temperature is 10°C (49°F), with maximums reaching up to 25°C (76°F) and minimums dipping as low as -6°C (21°F). This varied climate makes it essential for travelers to pack layers to enjoy both warm and chilly moments during their stay.
In Jasper in December, the total precipitation amount is 152 mm (6.0 in), which falls over the course of 12 days.
In Jasper in December humidity is 88%. With an average temperature of 10°C (49°F), this humidity feels like a damp chill that clings to your skin, making outdoor activities uncomfortable and leading to a sense of sluggishness that can dampen the excitement of exploring the area.
In Jasper in December, the maximum UV index reaches 4, which corresponds to a moderate Exposure Category. With a time to burn of 30 minutes, it’s important to take precautions to protect your skin. You can find more details in the Hourly UV Index in Jasper for better planning.
UV Risk Categories
Weather in Jasper varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Jasper, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 8°C (46°F) | 116 mm (4.6 inches) | 85% | moderate |
| February Weather | 11°C (52°F) | 184 mm (7.3 inches) | 84% | high |
| March Weather | 14°C (58°F) | 169 mm (6.7 inches) | 82% | very high |
| April Weather | 17°C (63°F) | 157 mm (6.2 inches) | 82% | very high |
| May Weather | 22°C (72°F) | 104 mm (4.1 inches) | 81% | extreme |
| June Weather | 25°C (78°F) | 149 mm (5.9 inches) | 77% | extreme |
| July Weather | 27°C (81°F) | 100 mm (4.0 inches) | 77% | extreme |
| August Weather | 27°C (80°F) | 122 mm (4.8 inches) | 72% | extreme |
| September Weather | 25°C (77°F) | 92 mm (3.6 inches) | 73% | very high |
| October Weather | 19°C (67°F) | 122 mm (4.8 inches) | 73% | high |
| November Weather | 11°C (53°F) | 79 mm (3.1 inches) | 85% | high |
| December Weather | 10°C (49°F) | 152 mm (6.0 inches) | 88% | moderate |