Last updated: June 18, 2025
In December, the average temperature in Greater Napanee, Canada hovers around -2°C (28°F). Expect a chilly range, where the minimum can plunge to -29°C (-20°F), while the maximum can reach a mild 14°C (58°F). During this period, precipitation averages 85 mm (3.4 in) over about 10 days, contributing to an overall average humidity of 89%. Prepare for a cold and damp month!
In December in Greater Napanee, the average temperature is -2°C (28°F), with a maximum reaching 14°C (58°F) and a minimum dropping as low as -29°C (-20°F). Be prepared for a wide range of temperatures and pack accordingly when traveling to Greater Napanee during this time.
In Greater Napanee in December, the precipitation amount is 85 mm (3.4 in) over the course of 10 days.
In Greater Napanee in December, humidity is 89%. With an average temperature of -2°C (28°F), this humidity feels like a heavy blanket, making it difficult to stay warm while traveling outdoors.
In Greater Napanee 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 Greater Napanee, you can visit Hourly UV Index in Greater Napanee.
UV Risk Categories
Weather in Greater Napanee varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Greater Napanee, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -6°C (22°F) | 71 mm (2.8 inches) | 93% | low |
| February Weather | -4°C (24°F) | 73 mm (2.9 inches) | 93% | moderate |
| March Weather | 0°C (32°F) | 70 mm (2.8 inches) | 86% | moderate |
| April Weather | 6°C (44°F) | 120 mm (4.7 inches) | 82% | very high |
| May Weather | 14°C (57°F) | 95 mm (3.8 inches) | 75% | very high |
| June Weather | 19°C (66°F) | 90 mm (3.5 inches) | 68% | very high |
| July Weather | 22°C (73°F) | 95 mm (3.7 inches) | 69% | very high |
| August Weather | 21°C (71°F) | 90 mm (3.6 inches) | 67% | very high |
| September Weather | 17°C (63°F) | 72 mm (2.8 inches) | 72% | high |
| October Weather | 11°C (52°F) | 137 mm (5.4 inches) | 83% | moderate |
| November Weather | 3°C (38°F) | 94 mm (3.7 inches) | 88% | moderate |
| December Weather | -2°C (28°F) | 85 mm (3.4 inches) | 89% | low |