Cold air moved into northern Wisconsin as a strong low pressure system departed and high pressure over the Plains moved toward the region. Low temperatures on the morning of January 30th were mainly in the -15��F to -30��F range and wind chills mostly -35 to -55. Temperatures across the area remained below zero throughout the day on the 30th. Schools and many businesses closed, public transportation suspended or curtailed service, and the U.S. Postal Service even suspended deliveries due to the bitter cold.
Several locations set or tied their records for the coldest daytime high temperatures on January 30th including: Appleton (Outagamie Co.); Manitowoc (Manitowoc Co.); Marshfield (Wood Co.); Merrill (Lincoln Co.); Oshkosh (Winnebago Co.); Wausau (Marathon Co.); and Wisconsin Rapids (Wood Co.).
Record low temperatures were tied or broken on the morning of the 31st at Appleton, Green Bay (Brown Co.), Marshfield, and Oshkosh.
Several locations set or tied their records for the coldest daytime high temperatures on January 31st including: Antigo (Langlade Co.); Appleton; Manitowoc; Marshfield; Oshkosh; Stevens Point (Portage Co.); Sturgeon Bay (Door Co.); and Wisconsin Rapids.

Cold/Wind Chill in LANGLADE, WISCONSIN
From 29-JAN-19 18:00:00 to 31-JAN-19 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

The low temperature in Antigo was -28 degrees on the morning of January 31st.

Cold/Wind Chill in NORTHERN MARINETTE, WISCONSIN
From 29-JAN-19 18:00:00 to 31-JAN-19 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

The low temperature at Wausaukee was -24 degrees on the morning of January 31st.

Cold/Wind Chill in SOUTHERN MARINETTE, WISCONSIN
From 29-JAN-19 18:00:00 to 31-JAN-19 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

The low temperature near Crivitz was -26 degrees on the morning of January 31st.

Cold/Wind Chill in MENOMINEE, WISCONSIN
From 29-JAN-19 18:00:00 to 31-JAN-19 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

The low temperature near Keshena was -28 degrees on the morning of January 31st.

Cold/Wind Chill in NORTHERN OCONTO, WISCONSIN
From 29-JAN-19 18:00:00 to 31-JAN-19 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

The low temperature near Mountain was -35 degrees on the morning of January 31st.

Cold/Wind Chill in SOUTHERN OCONTO, WISCONSIN
From 29-JAN-19 18:00:00 to 31-JAN-19 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

The low temperature in Suring was -30 degrees on the morning of January 31st.

Cold/Wind Chill in DOOR, WISCONSIN
From 29-JAN-19 18:00:00 to 31-JAN-19 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

The low temperature near Forestville was -22 degrees on the morning of January 31st.

Cold/Wind Chill in SHAWANO, WISCONSIN
From 29-JAN-19 18:00:00 to 31-JAN-19 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

The low temperature near Bowler was -30 degrees on the morning of January 31st.

Cold/Wind Chill in PORTAGE, WISCONSIN
From 29-JAN-19 18:00:00 to 31-JAN-19 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

The low temperature near Plover was -30 degrees on the morning of January 31st.

Cold/Wind Chill in WAUPACA, WISCONSIN
From 29-JAN-19 18:00:00 to 31-JAN-19 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

The low temperature southwest of New London was -28 degrees on the morning of January 31st.

Cold/Wind Chill in KEWAUNEE, WISCONSIN
From 29-JAN-19 18:00:00 to 31-JAN-19 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

The low temperature in Kewaunee was -20 degrees on the morning of January 31st.

Cold/Wind Chill in WAUSHARA, WISCONSIN
From 29-JAN-19 18:00:00 to 31-JAN-19 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

The low temperature near Poy Sippi was -32 degrees on the morning of January 31st.

Cold/Wind Chill in CALUMET, WISCONSIN
From 29-JAN-19 18:00:00 to 31-JAN-19 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

The low temperature in both Chilton and Brillion was -23 degrees on the morning of January 31st.

Cold/Wind Chill in BROWN, WISCONSIN
From 29-JAN-19 18:00:00 to 31-JAN-19 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

The low temperature in Green Bay on the morning of January 31st was -26 degrees. This tied the record for the date, previously set in 1899.

Cold/Wind Chill in OUTAGAMIE, WISCONSIN
From 29-JAN-19 18:00:00 to 31-JAN-19 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

The high temperature in Appleton on January 30th was -10 degrees, breaking the previous record of -4, set in 1996, for the coldest daytime high. The low temperature in Appleton on the morning of January 31st was -26, breaking the previous record low for the date of -22, set in 1996.

Cold/Wind Chill in WINNEBAGO, WISCONSIN
From 29-JAN-19 18:00:00 to 31-JAN-19 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

The high temperature in Oshkosh on January 30th was -11 degrees, breaking the previous record of -7, set in 1951, for the coldest daytime high. The low temperature in Oshkosh on the morning of January 31st was -26, tying the record low for the date that was set in 1918.

Cold/Wind Chill in WOOD, WISCONSIN
From 29-JAN-19 18:00:00 to 31-JAN-19 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

The high temperature in Marshfield on January 30th was -15 degrees, breaking the previous record of -6, set in 1951, for the coldest daytime high. The high temperature in Wisconsin Rapids on January 30th was -11 degrees, breaking the previous record of -3, set in 1951, for the coldest daytime high.
The low temperature in  Marshfield on the morning of January 31st was -30, tying the record low for the date that was set in 1918.

Cold/Wind Chill in MARATHON, WISCONSIN
From 29-JAN-19 18:00:00 to 31-JAN-19 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

The high temperature in Wausau on January 30th was -14 degrees, breaking the previous record of -12, set in 1899, for the coldest daytime high. The low temperature near Evergreen was -34 on the morning of January 31st.

Cold/Wind Chill in MANITOWOC, WISCONSIN
From 29-JAN-19 18:00:00 to 31-JAN-19 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

The high temperature in Manitowoc on January 30th was -12 degrees, tying the record for the coldest daytime high, set in 1899. The low temperature in Manitowoc was -23 on the morning of January 31st.

Cold/Wind Chill in LINCOLN, WISCONSIN
From 29-JAN-19 18:00:00 to 31-JAN-19 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

The high temperature in Merrill on January 30th was -5 degrees, tying the record for the coldest daytime high, set in 1907. The low temperature at Tomahawk was -36 on the morning of January 31st.

Cold/Wind Chill in VILAS, WISCONSIN
From 29-JAN-19 18:00:00 to 31-JAN-19 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

The low temperature at Manitowish Waters was -35 degrees on the morning of January 31st.

Cold/Wind Chill in ONEIDA, WISCONSIN
From 29-JAN-19 18:00:00 to 31-JAN-19 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

The low temperature at Rhinelander was -31 degrees on the morning of January 31st.

Cold/Wind Chill in FOREST, WISCONSIN
From 29-JAN-19 18:00:00 to 31-JAN-19 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

The low temperature near Crandon was -29 degrees on the morning of January 31st.

Cold/Wind Chill in FLORENCE, WISCONSIN
From 29-JAN-19 18:00:00 to 31-JAN-19 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

The low temperature in Florence was -26 degrees on the morning of January 31st.