Keystone Weather in December

December in Keystone averages -2°C (28°F) during the day and -13°C (9°F) at night. Around 37 mm (1.5 in) of snowfall is typical for this time of year.

Rainfall in Keystone in December

On average, there are about 16 days with snow during this month, averaging 37 mm (1.5 in). Rain is frequent but mostly light this month, with brief showers more common than heavy downpours.

Temperature in Keystone in December

Daytime highs in Keystone in December reach -2°C (28°F), with nights around -13°C (9°F). The winter season is characteristic of December. Cold conditions tend to persist from morning through evening, so be prepared for winter weather. With lows of -13°C (9°F), nights are freezing. Packing a spare blanket is worth considering if you're staying somewhere that might not be fully heated. During the coldest month of the year, be prepared to bundle up with heavy winter gear.

Our weather planner can help you find worldwide destinations with pleasant weather during this period. June, July and August typically offer the best weather for Keystone.