Last updated: June 24, 2025
In Scarborough, United States, the average temperature in December hovers around 1°C (35°F). Expect a chilling minimum of -17°C (2°F), while the mercury can rise to a maximum of 14°C (57°F). During this time, precipitation averages 141 mm (5.6 in) over about 10 days, coupled with an average humidity level of 81%. Stay prepared for the mix of icy air and damp conditions!
In December in Scarborough, the average temperature is 1°C (35°F). Maximum temperatures can reach 14°C (57°F), while minimums can plummet to -17°C (2°F). It's advisable to pack warm clothing and be prepared for varying weather conditions during your trip.
In Scarborough in December, the total precipitation amount is 141 mm (5.6 in) over a period of 10 days.
In Scarborough in December, humidity is 81%. With an average temperature of 1°C (35°F), this humidity feels like a thick, cold blanket wrapping around you, making travel uncomfortable and the air heavy, which can dampen your spirits as you navigate through the chilly conditions.
In Scarborough 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 Scarborough, you can visit Hourly UV Index in Scarborough.
UV Risk Categories
Weather in Scarborough varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Scarborough, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -1°C (30°F) | 92 mm (3.6 inches) | 86% | low |
| February Weather | -1°C (31°F) | 102 mm (4.0 inches) | 84% | moderate |
| March Weather | 2°C (35°F) | 93 mm (3.6 inches) | 82% | moderate |
| April Weather | 6°C (44°F) | 146 mm (5.7 inches) | 80% | high |
| May Weather | 11°C (53°F) | 89 mm (3.5 inches) | 72% | very high |
| June Weather | 17°C (62°F) | 75 mm (3.0 inches) | 72% | very high |
| July Weather | 20°C (69°F) | 106 mm (4.2 inches) | 67% | very high |
| August Weather | 21°C (69°F) | 66 mm (2.6 inches) | 66% | very high |
| September Weather | 18°C (64°F) | 81 mm (3.2 inches) | 71% | high |
| October Weather | 13°C (55°F) | 158 mm (6.2 inches) | 78% | moderate |
| November Weather | 6°C (43°F) | 123 mm (4.9 inches) | 84% | moderate |
| December Weather | 1°C (35°F) | 141 mm (5.6 inches) | 81% | low |