This Day in National/World Weather History ...
 26 December 1927 → The worst Christmas blizzard in a century buried the UK. While most of the country experienced snow, the south suffered from the brunt of the storm with drifts in places to 15 feet or more.
 26 December 1985 → Seattle, WA was in the midst of two and a half weeks of heavy fog. Christmas holiday travel was disrupted due to visibility of less than one eighth of a mile. Many flights were canceled and numerous accidents cluttered the highways.
 26 December 2009 → A huge blizzard raged across the Great Plains from the 24th through today. One to two feet of snow, propelled by winds up to 60 mph, buried the area from Oklahoma to the upper Mississippi Valley. Five people died in Oklahoma.

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December 20, 1967:

Freezing drizzle added a thin coating of ice over a previous ice coating that had been created on the 16th of the month over eastern South Dakota and still existed in most areas. An ice coating remained over many areas in eastern South Dakota through the end of the month.

December 20, 1991:

Light freezing drizzle and freezing rain developed over northern South Dakota from Timber Lake to Webster. Numerous car accidents were attributed to slippery conditions. The Aberdeen Police Department reported 24 accidents in Aberdeen, but only one resulted in an injury. Numerous businesses closed and schools were canceled.

December 20, 1993:

Strong winds, accompanied by existing snow cover and one to five inches of new snow, caused blizzard conditions in parts of north central and eastern South Dakota from the 20th to 22nd. A man died in a weather-related crash of a small plane near Isabel on the night of the 20th. The heaviest new snowfall of four to five inches was located in the Sisseton Hills in northeast South Dakota, while the north central part of the state generally received only an inch or two of new snow.

December 20, 2008:

Arctic air combined with blustery northwest winds brought extreme wind chills to central and northeast South Dakota and west central Minnesota from the late afternoon of the 20th until the afternoon of the 21st. Wind chills of 35 below to 45 below zero were common across the area.

Record Highs: Record Lows:
Aberdeen: 60 (1893) Aberdeen: -29 (1916)
Kennebec: 70 (1941) Kennebec: -35 (1916)
Mobridge: 61 (1957) Mobridge: -24 (1989)
Pierre: 62 (1941) Pierre: -18 (1989)
Sisseton: 52 (1979) Sisseton: -26 (1983)
Timber Lake: 58 (1941) Timber Lake: -20 (1990)
Watertown: 55 (1941) Watertown: -30 (1916)
Wheaton: 53 (1956) Wheaton: -31 (1916)

Record Precipitation: Record Snowfall:
Aberdeen: 0.36" (2010) Aberdeen: 5.0" (1967)
Kennebec: 0.34" (1902) Kennebec: 5.0" (1902)
Mobridge: 0.31" (1967) Mobridge: 4.1" (1967)
Pierre: 0.61" (1902) Pierre: 4.7" (1902)
Sisseton: 0.72" (1902) Sisseton: 7.2" (1902)
Timber Lake: 0.33" (2010) Timber Lake: 1.8" (2010)
Watertown: 0.55" (2010) Watertown: 5.0" (2010)
Wheaton: 0.24" (2008) Wheaton: 4.2" (2008) is the U.S. government's official web portal to all federal, state and local government web resources and services.