Last updated: June 18, 2025
In December, the average temperature in Lillooet, Canada hovers around -7°C (19°F), with extremes ranging from a bone-chilling -33°C (-27°F) to a slightly milder 4°C (39°F). This month also sees significant precipitation, totaling 88 mm (3.5 in) spread across about 14 days, while the air is quite damp, registering an average humidity of 97%.
In December in Lillooet, the average temperature is -7°C (19°F), with maximums reaching 4°C (39°F) and minimums dipping as low as -33°C (-27°F). Be sure to pack warm clothing if you're planning to travel during this chilly time of year!
In Lillooet in December, the precipitation amount is 88 mm (3.5 in) over the course of 14 days.
In Lillooet in December, humidity is 97%. With an average temperature of -7°C (19°F), this humidity feels like a biting chill that penetrates through layers of clothing, making outdoor activities feel much harsher and causing your breath to freeze in the air, turning even short excursions into a daunting experience.
In Lillooet in December, the maximum UV index is 1, which corresponds to a low Exposure Category. This means you have a time to burn of 45 minutes. For more details, you can check the Hourly UV Index in Lillooet.
UV Risk Categories
Weather in Lillooet varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Lillooet, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -7°C (20°F) | 74 mm (2.9 inches) | 93% | low |
| February Weather | -8°C (18°F) | 67 mm (2.6 inches) | 91% | moderate |
| March Weather | -2°C (29°F) | 48 mm (1.9 inches) | 91% | moderate |
| April Weather | 2°C (36°F) | 47 mm (1.9 inches) | 89% | high |
| May Weather | 8°C (47°F) | 38 mm (1.5 inches) | 85% | very high |
| June Weather | 12°C (54°F) | 49 mm (1.9 inches) | 83% | very high |
| July Weather | 16°C (60°F) | 38 mm (1.5 inches) | 86% | very high |
| August Weather | 15°C (60°F) | 40 mm (1.6 inches) | 82% | very high |
| September Weather | 10°C (50°F) | 69 mm (2.7 inches) | 83% | high |
| October Weather | 3°C (37°F) | 90 mm (3.5 inches) | 89% | moderate |
| November Weather | -2°C (29°F) | 110 mm (4.3 inches) | 93% | low |
| December Weather | -7°C (19°F) | 88 mm (3.5 inches) | 97% | low |