The Continental Army encamped at Valley Forge on a day having "stormy winds and piercing cold". In and out weather followed.
The 24 hour snowfall record occurred in Oklahoma with 22 inches falling at Beaver.
The Riverside Ranger Station in Yellowstone Park, Montana dropped to 59 degrees below zero for the lowest December temperature ever recorded in the contiguous United States.
Northern sections of Arizona were amidst in their second heavy snowstorm in a week. These 2 storms combined dumped some of the heaviest snowfall on record for the state. A record 83 inches of snow covered the ground at Flagstaff after a total of 86 inches of snow fell from the 2 storms, inflicting great hardship on Indian reservations. Many homes, farm buildings, and business structures collapsed from the weight of the snow.
A big pre-Christmas snowstorm began over Indiana on this day and continued into the 20th. Snowfall totals included 18 inches at Covington, 17 inches at Lafayette and Peru, 14 inches at Fort Wayne, and 12.5 inches at Indianapolis.
Lake effect snowsqualls buried sections of northwestern Indiana with 26 inches falling at Michigan City and 20 inches at Westville.