| July 1999 | Tornado (F1) | Grant | 1 hurt, $700,000 | A tornado touched down 9 miles south southwest of Grant and lifted 1 mile south of Madrid. One man sustained minor injuries when his pickup was struck. The pickup was tossed and whirled around. The pickup was a total loss. Other damage included the destruction or damage to 30 center pivot irrigation systems and several barns, grain bins, and quonset buildings were damaged or destroyed. Damage to utilities included the loss of 82 power poles, 25 transformers, 10 high voltage transmission towers. |
| March 2007 | Tornado (EF2) | Grant | $1,200,000 | A large supercell thunderstorm originally spawned two tornadoes with the eastern tornado eventually taking over. The tornado touched down approximately 6 miles south-southwest of Grant and moved northeast for a few miles and then turned northwest to pass 3 miles west of Grant and continue northwest to near the Perkins and Keith County line approximately 12 miles north-northwest of Grant. The tornado encountered the first farm where it destroyed outbuildings and grain bins and damaged the roof of a metal storage building. Damage to the second farm included ripping off half the roof on the home. At the third farmstead, the tornado destroyed grain bins and a barn and ripped a hole in the roof of the home. The tornado also uprooted and snapped off numerous trees, broke off power poles, and overturned center pivot irrigation systems. |
| August 1997 | Hail | Grant | $800,000 | no account filed |
| September 1995 | Thunderstorm Wind | Grant | $185,000 | A public report of 101 mph winds and dime sized hail caused significant damage to irrigation pivots, grain bins, sheds/barns, and downed telephone poles, and large tree branches. There was total crop loss in the area. The area affected by the storm was 30 miles long and 10 miles wide. |
| July 2006 | Thunderstorm Wind | Grant | $75,000 | Thunderstorm winds knocked over two center pivot irrigation systems and destroyed crops on the north side of Grant. |
| May 2016 | Thunderstorm Wind | Grant | $30,000 | A large cottonwood tree was snapped in half along the 300 block of Logan Street and an empty cargo trailer was rolled into the street in the 400 block of Hancock Street. Several garage doors on metal buildings were blown in and an awning was lifted and damaged at the fairgrounds. The damage was consistent with winds between 80 and 90 MPH. |
| June 2013 | Thunderstorm Wind | Grant | $30,000 | Wind gusts estimated 70 mph that downed power poles. |
| July 2010 | Thunderstorm Wind | Grant | $25,000 | A Thunderstorm outflow boundary produced several gustnadoes that did damage at the Wilson feedlot. The gustnadoes destroyed a raised, open faced storage building, moved a scale house building approximately two inches off it's foundation, and damaged the foundation to a third storage building. Also destroyed was an empty 1200 pound grain bin. |
| September 1999 | Thunderstorm Wind | Grant | $25,000 | Thunderstorm winds blew out the wall of a warehouse scattering debris for 200 yards. |
| April 2010 | Thunderstorm Wind | Grant | $15,000 | Two gustnadoes were spotted in gust front winds. One of the gustnadoes, 2.75 miles south of Grant, damaged a center pivot irrigation system as it passed. |
| June 2009 | Hail | Grant | $15,000 | Hail covered the ground. |
| July 2007 | Flash Flood | Grant | $15,000 | Heavy rainfall from a nearly stationary thunderstorm produced flash flooding. City streets around Grant were under water. |
| May 2008 | Thunderstorm Wind | Grant | $10,000 | Thunderstorm winds uprooted two 70 ft pine trees. The wind combined with 1 inch hail also damaged some roofs. |
| June 2009 | Hail | Grant | $8,000 | Golf ball size hail broke out the window of a storm spotter vehicle. |
| July 2009 | Hail | Grant | $8,000 | Law enforcement reported hail along Highway 61. |
| July 2009 | Hail | Grant | $8,000 | no account filed |
| July 2009 | Hail | Grant | $5,000 | no account filed |
| July 2009 | Hail | Grant | $5,000 | no account filed |
| July 2009 | Hail | Grant | $4,000 | no account filed |
| July 2009 | Hail | Grant | $4,000 | no account filed |
| May 1998 | Hail | Grant | $4,000 | no account filed |
| July 2009 | Hail | Grant | $3,000 | no account filed |
| July 2003 | Hail | Grant | $3,000 | no account filed |
| August 1997 | Hail | Grant | $3,000 | no account filed |
| May 2008 | Thunderstorm Wind | Grant | $2,000 | The thunderstorm winds combined with 1 inch hail damaged some roofs. |
| April 2005 | Lightning | Grant | $2,000 | Lightning struck a farm house and damaged the phone lines as well as electrical wiring to the well pump. |
| July 2009 | Hail | Grant | $2,000 | no account filed |
| July 2003 | Hail | Grant | $2,000 | no account filed |
| August 1999 | Hail | Grant | $2,000 | no account filed |
| June 2004 | Hail | Grant | $1,000 | no account filed |
| June 2025 | Thunderstorm Wind | Grant | - | Outflow from decaying thunderstorms. |
| September 2024 | Thunderstorm Wind | Grant | - | Winds associated with a heat burst. |
| September 2022 | Hail | Grant | - | Half dollar and quarter size hail reported at this location. |
| September 2022 | Thunderstorm Wind | Grant | - | Thunderstorm wind gust measured at the Grant Airport. |
| July 2022 | Thunderstorm Wind | Grant | - | Grant Fire Department reports damage to shingles, trees, and power lines from thunderstorm winds. |
| May 2022 | Tornado (EFU) | Grant | - | A landspout tornado briefly touched down in a field with no damage reported. |
| May 2022 | Tornado (EFU) | Grant | - | Land spout tornado briefly touched down in an open field with no damage reported. |
| May 2021 | Hail | Grant | - | Quarter sized hail reported northwest of Grant. |
| May 2021 | Hail | Grant | - | A 2 mile wide swath of hail reported, some stones were up to golf ball size. |
| July 2020 | Hail | Grant | - | Public reported quarter size hail in Grant. |
| July 2020 | Thunderstorm Wind | Grant | - | Nebraska mesonet site near Grant measured a 58 mph wind gust. |
| July 2020 | Tornado (EFU) | Grant | - | Trained weather spotters, among other sources, confirmed a landspout tornado west of Grant. Photographic evidence supported a brief touchdown in an open field. No damage was reported. |
| July 2020 | Tornado (EFU) | Grant | - | Trained weather spotters reported a brief landspout over open fields. No damage was reported. |
| August 2019 | Thunderstorm Wind | Grant | - | Winds were estimated between 70 and 80 mph by the public. |
| August 2019 | Thunderstorm Wind | Grant | - | Measured peak wind speed from automated weather site. |
| August 2019 | Thunderstorm Wind | Grant | - | Estimated 60 mph wind gust. |
| June 2018 | Tornado (EF0) | Grant | - | Tornado briefly touched down in a field 5 miles northwest of Grant Nebraska. No damage was reported. |
| July 2018 | Thunderstorm Wind | Grant | - | Tree fell through a roof of a house. |
| July 2018 | Thunderstorm Wind | Grant | - | No information available. |
| July 2018 | Thunderstorm Wind | Grant | - | No information available. |
| August 2018 | Hail | Grant | - | A picture report was provided on social media. |
| May 2017 | Hail | Grant | - | The Grant fire department reported nickel size hail near Grant. |
| May 2017 | Hail | Grant | - | The general public reported quarter size hail in Grant via pictures from social media. |
| May 2017 | Hail | Grant | - | The Grant fire department reported ping pong ball size hail, 3 miles east of Grant. |
| June 2013 | Thunderstorm Wind | Grant | - | Winds estimated at 60 mph. |
| June 2013 | Thunderstorm Wind | Grant | - | Winds estimated at 60 mph. |
| June 2011 | Hail | Grant | - | Large marble to half dollar sized hail nearly covered the ground in Grant. |
| June 2011 | Thunderstorm Wind | Grant | - | Public estimated wind gusts of at least 60 mph along with quarter sized hail. |
| August 2011 | Hail | Grant | - | Golf ball size hail covered the ground. |
| August 2011 | Hail | Grant | - | Half dollar size hail fell in Grant, while quarter size hail fell six miles west-northwest of Grant. |