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Wilmington, Ohio

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January 6-7, 2014
Very Cold Weather


An anomalous Arctic air mass descended on much of the eastern two-thirds of the United States on January 6 and 7, 2014. Despite the very cold air throughout the depth of the atmosphere, even colder readings were not realized at the ground because of persistent winds and a lack of deep snow pack in much of the area. To maximize cooling at night, typically clear skies, calm winds, and deep snow pack are most efficient. Nevertheless, the air mass was cold enough to produce record low temperatures. Depending on location, the temperatures were the lowest since other cold outbreaks in 2011, 2009, or 1994.

Record Daily Low Temperatures Set:


New Record

Old Record


-7 on Jan. 7

-5 in 1884


-7 on Jan. 6 (tie)

-7 in 1924


-10 on Jan. 6

-8 in 1924

Hours Below Zero

Much of the area spent an extended period of time below zero degrees (air temperature) during this event.


Consecutive Hours Below 0F
Jan. 6-7, 2014

Known Record


21 hours

56 hours
Jan. 16-18, 1977


27 hours

58 hours
Jan. 16-18, 1977


28 hours

60 hours
Dec. 23-26, 1983
Jan. 17-20, 1994

Wind Chills

The other main story was the brutally cold wind chill caused by persistent 15-30 MPH winds. Most locations saw wind chills between -25 and -40 degrees Fahrenheit, warranting the first Wind Chill Warning issued by NWS Wilmington since 2009. At the major airports, the wind chill readings were the coldest since January 1994, and about 15 degrees off the all-time record low wind chill values.

Upper Air Measurements

The temperature measured at the 850 millibar level (about 4500 ft above ground) on the evening of January 6th, via our 7 PM weather balloon, was -31.1 degrees Celsius. This is the 5th coldest ever recorded by a Dayton/Wilmington weather balloon, dating to 1948. The coldest recorded was -32.5 degrees Celsius on January 20, 1985.

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National Weather Service
Wilmington Ohio Weather Forecast Office
1901 South State Route 134
Wilmington, OH 45177
Tel: (937) 383-0031
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Page last modified: January 7, 2014.
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