All-time weather records — South Sioux City, NE

Record high
104.0°F
July 24, 2012
Record low
-26.0°F
February 16, 2021
Wettest day
6.15 in
June 15, 2014

Climate change signal in South Sioux City

67.8%

of South Sioux City's all-time daily heat records were set in the last decade (248 of 366 records since 2015).

65.6%

of all-time daily cold records were set in the last decade (240 of 366 records since 2015).

If records were spread evenly across the station's history, you'd expect roughly 5% per decade. Decade-by-decade, here's where each record-breaking day was set:

Decade Heat records set # Cold records set #
2010s
199
238
2020s
167
128

Records are the all-time daily extremes that are still standing — each daily record can only be held by one year. The station's earliest hot record was set in 2011, the latest in 2026. Period of observation: 2011-2026.

Records by month

Month Hottest day Coldest day Wettest day
January 68.0°F — Jan 6, 2012 -24.0°F — Jan 2, 2018 1.19 in — Jan 23, 2018
February 75.0°F — Feb 27, 2024 -26.0°F — Feb 16, 2021 0.67 in — Mar 1, 2012
March 93.0°F — Mar 22, 2026 -14.1°F — Mar 4, 2014 1.84 in — Mar 25, 2024
April 91.9°F — Apr 2, 2012 7.0°F — Apr 5, 2018 2.15 in — Apr 15, 2012
May 102.0°F — May 15, 2013 28.0°F — May 4, 2011 2.20 in — May 24, 2012
June 100.0°F — Jun 18, 2021 43.0°F — Jun 1, 2012 6.15 in — Jun 15, 2014
July 104.0°F — Jul 24, 2012 46.0°F — Jul 29, 2013 3.00 in — Jul 29, 2024
August 102.0°F — Aug 3, 2022 45.0°F — Aug 18, 2012 2.70 in — Aug 19, 2015
September 102.0°F — Sep 1, 2012 28.9°F — Sep 24, 2012 2.60 in — Sep 5, 2018
October 97.0°F — Oct 2, 2023 12.0°F — Oct 28, 2019 3.07 in — Oct 7, 2017
November 78.1°F — Nov 3, 2022 -4.0°F — Nov 13, 2019 1.65 in — Nov 12, 2015
December 66.9°F — Dec 16, 2021 -20.0°F — Dec 18, 2016 1.15 in — Dec 29, 2019

Click a month to see every daily record for that month in South Sioux City.