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.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Keystone's climate page.
Keystone Temperature in December
Min Temperature
-13°C (9°F)
Max Temperature
-2°C (28°F)
Chance of Rain
52%
Precipitation
37 mm (1.5 in)
Rainy days
16 days
Best Places in the United States of America in December
Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in December →
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What to Wear in Keystone in December
It's wise to bundle up for freezing conditions in Keystone in December. If you have a winter jacket with good insulation, waterproof winter boots, thermal layers, and warm accessories it's smart to pack them. Hand and foot warmers can be lifesavers, especially during the night. Light rain is possible, so consider bringing a small umbrella or rain jacket.What To Do in Keystone in December
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Keystone's climate page.
See the full Keystone climate overview or explore weather in the United States of America.
