| June 2014 | Flash Flood | Hartington | $200,000 | The nearly stationary supercell over Cedar County produced very heavy rain and flash flooding. Flooding was reported over State Highway 57 south of Hartington. In addition to this flooding, numerous secondary gravel roads were flooded and impassable during the late evening on June 17th from torrential rains. |
| July 1999 | Flash Flood | Hartington | $150,000 | Rainfall of 9.5 to 10.5 inches fell on the Hartington area in two days, 7/19 and 7/20/99 with lesser amounts across the rest of Cedar county. The 2nd day of rain caused the most damage due to flash flooding with 2 county bridges destroyed and highways 12 and 81 northwest of Hartington flooded. Damage was sustained along the Norwegian Bow Creek and the West Bow Creek. Besides bridge and road damage, several homes were flooded. Later in the afternoon on the 21st, high water along the West Bow Creek approached Bow Valley and Wynot flowing over some gravel roads and forcing sandbagging of several homes. |
| September 1997 | Lightning | Hartington | $75,000 | Lightning struck power lines outside a telephone company facility. The resulting power surge did significant damage to telphone equipment at the facility. |
| May 1999 | Tornado (F1) | Hartington | $50,000 | Farm buildings were heavily damaged as well as a garage, part of a roof of a house and part of a center irrigation pivot. |
| July 1997 | Thunderstorm Wind | Hartington | $10,000 | no account filed |
| June 2025 | Hail | Hartington | - | Emergency manager report of hail measured up to 1 in diameter. |
| April 2024 | Hail | Hartington | - | The office received a public report of 1 inch hail. |
| May 2024 | Hail | Hartington | - | The office received a report from the 911 Call Center for golfball sized hail 2 miles to the northwest of Hartington, NE. |
| May 2024 | Hail | Hartington | - | The office received a report from social media of golfball sized hail that fell in far eastern Cedar County, Nebraska. |
| July 2024 | Thunderstorm Wind | Hartington | - | A trained spotter reported a 71 miles per hour wind gust. |
| June 2023 | Thunderstorm Wind | Hartington | - | Emergency manager reported 4 center pivots overturned. |
| October 2022 | Thunderstorm Wind | Hartington | - | Personal weather station measured a peak wind gust of 60 mph. |
| May 2022 | Thunderstorm Wind | Hartington | - | Received several reports of strong wind gusts of 70 to 80 mph near Hartington and other areas of southern Cedar County. Visibility was low due to blowing dust. |
| May 2022 | Thunderstorm Wind | Hartington | - | Public reported trees uprooted and/or snapped. |
| May 2022 | Thunderstorm Wind | Hartington | - | Emergency manager reported tree damage on the golf course. |
| May 2022 | Thunderstorm Wind | Hartington | - | Police reported 1.5 inch hail and power lines down. |
| May 2021 | Tornado (EF0) | Hartington | - | Emergency manager reported a tornado. The tornado started in a field northwest of the Hartington Golf Course and moved southeast. The tornado crossed Nebraska Highway 57 and ended in a residential section of town. A couple large tree limbs were ripped off oak trees in the golf course. Some roofs of homes sustained loss of shingles. Corn stubble from the corn field northwest of the golf course was deposited across parts of Hartington. |
| June 2018 | Thunderstorm Wind | Hartington | - | Law enforcement estimated 70 mph winds downed large tree limbs. |
| July 2018 | Hail | Hartington | - | The hail shredded crops and trees. |
| April 2011 | Hail | Hartington | - | Hail up to golfball-size fell from the left mover of a supercell that split southwest of the county. The hail was reported in and north of the Hartington area. |
| May 2010 | Thunderstorm Wind | Hartington | - | Emergency management estimated that thunderstorm wind gusts reached around 60 mph in the area. |
| June 2010 | Thunderstorm Wind | Hartington | - | Thunderstorm wind gusts estimated at over 60 mph downed trees and destroyed at least one farm outbuilding in the Hartington area. |
| June 2009 | Hail | Hartington | - | The hail was accompanied by thunderstorm winds estimated at 60 mph. |
| June 2009 | Thunderstorm Wind | Hartington | - | Thunderstorm wind gusts estimated at 60 to 65 mph were reported from 2 miles west through 2 miles east of Hartington. The winds caused a roof to cave in on a house in Hartington and big trees were uprooted with lots of branches and trees down all over town. Some irrigation systems were overturned west of Hartington and a trailer there was tipped over and a shed destroyed. East of town some trees were downed and a fence destroyed. |
| July 2009 | Thunderstorm Wind | Hartington | - | Wind equipment on local cable TV measured a thunderstorm wind gust of 62 mph. Rainfall of 2.16 inches also fell from the storm. |
| June 2006 | Thunderstorm Wind | Hartington | - | Thunderstorm winds estimated at 70 mph downed large tree limbs in the area. |
| June 2006 | Thunderstorm Wind | Hartington | - | Thunderstorm winds estimated at 60 mph downed a large tree which blocked Highway 15 for a time southeast of Hartington. |
| June 2006 | Hail | Hartington | - | Leaves were reportedly stripped off of trees in the area. |
| July 2004 | Thunderstorm Wind | Hartington | - | A severe thunderstorm that intensified over the Hartington area downed trees and caused other tree damage from Hartington to several miles east of town. Winds were estimated to be at least 70 mph. Very heavy rain accompanied the storm which caused some street flooding in town. |
| June 2003 | Flash Flood | Hartington | - | Heavy rain caused flash flooding of many county roads in Cedar county, mainly between Hartington and Belden. Water also briefly crossed, and caused the temporary closure of Highway 20 west of Laurel, Highway 57 south of Hartington and Highway 15 north of Laurel. Several county road culverts had to be replaced, and one county road 1/2 mile east of the junction of 571 Ave and 879 road was washed out. Rainfall amounts included 3.5 inches 5 miles north of Laurel, 3.1 inches at Wynot and 2.5 inches at Hartington, all falling in around a 2 hour period. |
| June 2003 | Hail | Hartington | - | The hail damaged cars in town and also drifted like snow. |
| June 2003 | Tornado (F0) | Hartington | - | A brief touchdown of a tornado in an open field southeast of Hartington was reported by law enforcement personnel. |
| June 2003 | Thunderstorm Wind | Hartington | - | Estimated by a trained weather spotter. |
| April 2001 | Tornado (F0) | Hartington | - | A brief tornado touchdown was reported by a law enforcement official in open country southwest of Hartington. |
| July 2001 | Thunderstorm Wind | Hartington | - | Thunderstorm winds broke large tree limbs and uprooted trees from northwest of Hartington into Hartington. |
| June 2000 | Hail | Hartington | - | See the narrative for 6 NW of Crofton in Knox county beginning at 1955 CST. |
| July 1999 | Flash Flood | Hartington | - | Flash flood covered a county road with mud and other debris. |
| May 1999 | Thunderstorm Wind | Hartington | - | Tree branches downed. |
| August 1997 | Hail | Hartington | - | A hailstorm moved across the central and southern portions of Cedar county causing significant damage or destruction to crops. It was estimated that there was 1.5 million dollars damage to the corn crop and 1.5 million dollars damage to the soybean crop. The most significant damage was confined to an area six miles wide and 14 miles long affecting 65,280 acres of farm land west and southwest of Hartington. Other significant crop damage occurred in the Coleridge area and to the north of Randolph. |
| September 1997 | Thunderstorm Wind | Hartington | - | Tree limbs and power lines blown down. |
| April 1994 | Thunderstorm Wind | Hartington | - | Strong winds destroyed a garage. |
| July 1994 | Thunderstorm Wind | Hartington | - | Trees were blown down in Hartington. |
| July 2017 | Hail | Hartington | - | no account filed |
| September 2014 | Hail | Hartington | - | no account filed |
| May 2014 | Hail | Hartington | - | no account filed |
| June 2014 | Hail | Hartington | - | no account filed |
| July 2013 | Hail | Hartington | - | no account filed |
| July 2009 | Hail | Hartington | - | no account filed |
| June 2008 | Hail | Hartington | - | no account filed |
| June 2006 | Hail | Hartington | - | no account filed |
| April 2005 | Hail | Hartington | - | no account filed |
| June 2005 | Hail | Hartington | - | no account filed |
| June 2005 | Hail | Hartington | - | no account filed |
| August 2005 | Hail | Hartington | - | no account filed |
| August 2005 | Hail | Hartington | - | no account filed |
| April 2004 | Hail | Hartington | - | no account filed |
| September 2004 | Hail | Hartington | - | no account filed |
| July 2004 | Hail | Hartington | - | no account filed |
| June 2003 | Hail | Hartington | - | no account filed |
| August 2002 | Hail | Hartington | - | no account filed |