| May 2006 | Lightning | Grafton | 1 hurt | Lightning struck an apartment complex, causing roof and electrical-system damage to one apartment unit. A man who was working near the apartment unit was also struck, knocking him briefly unconscious. When he awoke, he reported numbness to the right side of his body and a severe headache. |
| August 1994 | Thunderstorm Wind | Grafton | $1,300,000 | Strong winds caused widespread damage. Uprooted trees fell on and damaged cars. A hangar at the airport was destroyed damaging four airplanes. Other damage occurred to a 70 ft. trailer and to many homes. |
| August 2000 | Thunderstorm Wind | Grafton | $100,000 | Two potato warehouse roofs were blown off in Grafton. |
| June 2016 | Flash Flood | Grafton | $10,000 | Heavy rain flooded fields and farm access roads across several townships in central and eastern Walsh County. |
| July 2011 | Lightning | Grafton | $10,000 | A lightning strike was presumed to have been the source of a house fire. The time was estimated. |
| June 2014 | Thunderstorm Wind | Grafton | $1,000 | A few large tree branches and limbs were broken down around the Grafton area. One tree limb fell across a parked pickup truck. |
| August 2001 | Thunderstorm Wind | Grafton | $1,000 | Trees were blown down. |
| August 2001 | Thunderstorm Wind | Grafton | $1,000 | Trees were blown down. |
| August 2001 | Thunderstorm Wind | Grafton | $1,000 | Trees were blown down. |
| June 2000 | Thunderstorm Wind | Grafton | $1,000 | Trees were blown down northeast of Grafton. |
| August 2000 | Thunderstorm Wind | Grafton | $1,000 | Trees were damaged by the wind. |
| July 1996 | Thunderstorm Wind | Grafton | $500 | no account filed |
| August 2002 | Thunderstorm Wind | Grafton | $200 | Tree limbs were blown down. |
| July 2020 | Thunderstorm Wind | Grafton | - | Metal roofing and siding were blown off a building. |
| July 2018 | Thunderstorm Wind | Grafton | - | Several large trees were blown down, a fireworks tent was blown down, and a boat/trailer combination was blown over. |
| July 2018 | Thunderstorm Wind | Grafton | - | Multiple trees were snapped or uprooted in town. One north to south oriented building near highway 17 had its sheet metal roofing peeled back toward the east. |
| August 2018 | Thunderstorm Wind | Grafton | - | A large tree was blown down. |
| June 2016 | Thunderstorm Wind | Grafton | - | Trees were blown down. |
| July 2015 | Hail | Grafton | - | The hail fell along county road 9. |
| June 2013 | Thunderstorm Wind | Grafton | - | At least one large tree and several large tree branches were blown down in Grafton. |
| June 2012 | Thunderstorm Wind | Grafton | - | Four inch diameter tree branches were blown down. |
| July 2012 | Heavy Rain | Grafton | - | The heavy rain caused street flooding in Grafton. Pea size hail also fell. |
| July 2011 | Thunderstorm Wind | Grafton | - | A group of power poles was blown over. |
| September 2011 | Thunderstorm Wind | Grafton | - | Extensive damage occurred in Grafton. More than 50 large trees were blown down, including some 60 to 70 foot tall evergreens. Five houses and multiple vehicles were damaged by falling trees. One trailer house had substantial damage from a tree falling on it. The elevator in town was damaged, commercial buildings had metal siding blown off, and five or six utility poles were blown down. Several speed limit signs were bent over. Peak winds were estimated at 90 mph. |
| June 2010 | Tornado (EF1) | Grafton | - | The tornado touched down near Grafton and tracked about six miles to the east. The tornado broke down numerous large tree limbs across the north part of Grafton and snapped off several large pine trees in the cemetery east of town. The tornado continued eastward along highway 17, severely damaging shelterbelts, tossing culvert sections, denting steel grain bins, and knocking down two power poles. Peak winds were estimated at 110 mph. |
| May 2010 | Thunderstorm Wind | Grafton | - | A small metal shed was blown up onto the fencing near the cemetery. |
| June 2009 | Thunderstorm Wind | Grafton | - | Roofing material was blown off a potato warehouse on the south side of Grafton. |
| June 2005 | Tornado (F1) | Grafton | - | Trees in shelterbelts were snapped off at ground level. Peak wind speeds were estimated at 80 mph. The tornado continued into Pembina county. |
| July 2005 | Flash Flood | Grafton | - | Intersections were flooded in downtown Grafton. |
| July 2003 | Thunderstorm Wind | Grafton | - | Shingles were blown off a roof. |
| July 2003 | Thunderstorm Wind | Grafton | - | Large tree branches were blown down. |
| July 2003 | Thunderstorm Wind | Grafton | - | A large cottonwood tree was blown down. |
| May 2002 | Hail | Grafton | - | The hail covered the grass. |
| July 2002 | Flash Flood | Grafton | - | Street flooding was reported. |
| June 2000 | Flood | Grafton | - | 6 to 8 inches of rain fell across the Grafton area, causing some flooding problems across the city. Many streets flooded and several basements took on water. |
| August 1998 | Hail | Grafton | - | One inch hail fell at Auburn, ND. |
| August 1998 | Hail | Grafton | - | Baseball-sized hail fell at Oakwood, ND, breaking windows and damaging cars. |
| June 2020 | Hail | Grafton | - | no account filed |
| August 2016 | Hail | Grafton | - | no account filed |
| July 2016 | Hail | Grafton | - | no account filed |
| July 2015 | Hail | Grafton | - | no account filed |
| June 2010 | Hail | Grafton | - | no account filed |
| May 2010 | Hail | Grafton | - | no account filed |
| June 2007 | Hail | Grafton | - | no account filed |
| July 2006 | Hail | Grafton | - | no account filed |
| August 2006 | Thunderstorm Wind | Grafton | - | no account filed |
| May 2004 | Hail | Grafton | - | no account filed |
| May 2004 | Hail | Grafton | - | no account filed |
| June 2004 | Hail | Grafton | - | no account filed |
| July 2004 | Thunderstorm Wind | Grafton | - | no account filed |
| August 2004 | Hail | Grafton | - | no account filed |
| July 2002 | Hail | Grafton | - | no account filed |
| July 2001 | Hail | Grafton | - | no account filed |
| August 2001 | Hail | Grafton | - | no account filed |
| July 2001 | Hail | Grafton | - | no account filed |
| June 2000 | Hail | Grafton | - | no account filed |
| June 2000 | Hail | Grafton | - | no account filed |
| June 2000 | Hail | Grafton | - | no account filed |
| June 2000 | Hail | Grafton | - | no account filed |
| June 2000 | Flash Flood | Grafton | - | no account filed |