This Day in National/World Weather History ...
 21 December 1944 → The Battle of the Bulge lasted from December 16, 1944 to January 25, 1945. By this time Germany was clearly losing World War II and Hitler was hoping to regain advantage if the attack would occur in bad weather to prevent the Allied Air Forces from being effective. As the Americans occupied the strategic position of Bastogne, the German army surrounded the city. However because of bad weather, planes were unable to fly and provide supplies by air drop to the American Forces. On December 29 the weather finally cleared up and much needed supplies were received. The Americans then launched a counteroffensive, but soldiers had to fight the cold and snow as well.
 21 December 1967 → The City Hall and a large portion of the business district of Potosi, MO was destroyed by an F4 tornado. There were 52 injuries and 3 deaths.

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January 31, 1969:

Minnesota experienced many winter storms throughout the month of 1969 where several people had died from heart attacks and auto accidents. Many roads were blocked or iced over several times during the month. Considerable snow during the month of January along with frequent periods of strong winds resulted in many days of blowing and drifting snow across northeast South Dakota. There were also many days with freezing rain. The most significant icing occurred on the 22nd and the 27th. There were numerous days where the traffic was at a standstill due to blocked roads and closed airports. Many school closings occurred throughout the month with many activities cancelled. Many rural roads went long periods without being opened resulting in hardships for farmers. Days of blowing snow were the 8th, 19th, 22nd, 23th, 24th, 26th, 27th, and 31st. Days of freezing rain were the 5th, 14th, 15th, 16th, 17th, 18th and the 22nd.

Record Highs: Record Lows:
Aberdeen: 51 (1924) Aberdeen: -32 (1996)
Kennebec: 61 (1992) Kennebec: -29 (1918)
Mobridge: 53 (1992) Mobridge: -32 (1917)
Pierre: 62 (1992) Pierre: -20 (1996)
Sisseton: 46 (2012) Sisseton: -28 (1982)
Timber Lake: 59 (1992) Timber Lake: -31 (1917)
Watertown: 51 (1931) Watertown: -28 (1918)
Wheaton: 47 (2012) Wheaton: -28 (1982)

Record Precipitation: Record Snowfall:
Aberdeen: 0.60" (1917) Aberdeen: 6.0" (1917)
Kennebec: 0.35" (1915) Kennebec: 5.0" (2011)
Mobridge: 0.20" (1917) Mobridge: 2.0" (1917)
Pierre: 0.13" (2011) Pierre: 2.2" (2011)
Sisseton: 0.29" (2011) Sisseton: 5.2" (2011)
Timber Lake: 0.36" (1916) Timber Lake: 5.6" (1917)
Watertown: 0.28" (1981) Watertown: 3.0" (1965)
Wheaton: 0.27" (2011) Wheaton: 4.0" (1965) is the U.S. government's official web portal to all federal, state and local government web resources and services.