| June 2015 | Thunderstorm Wind | Williston | $12,000 | Williston City Police had multiple reports of trees and powerlines down including Janet Street. Dime size hail also occurred. |
| September 2000 | Thunderstorm Wind | Williston | $7,000 | Sheriff reported trees down in Williston, one fell onto a liquor store. |
| August 2013 | Thunderstorm Wind | Williston | $4,000 | Utility Company reported some outages due to large limbs on lines near the town of Williston. |
| June 2013 | Thunderstorm Wind | Williston | $3,000 | Augusta TV station reported trees down in Williston. |
| July 2010 | Thunderstorm Wind | Williston | $3,000 | Savannah River Site reported trees down near the Williston barricade. |
| April 1999 | Tornado (F1) | Williston | $3,000 | KC4JMV and damage survey confirmed an F1 tornado took down numerous trees and powerlines along a 2 mile path. Minor damage was also done to a home. |
| May 2011 | Thunderstorm Wind | Williston | $2,000 | Sheriff reported trees down on Moonlight road in Williston. |
| June 2013 | Flood | Williston | $1,000 | Local police reported minor flooding in the town of Williston. |
| May 2012 | Thunderstorm Wind | Williston | $1,000 | Sheriff reported a tree and large limbs down on Patterson Road. Penny size hail also occurred in the same area. |
| July 2023 | Thunderstorm Wind | Williston | - | Numerous trees were downed in the Williston area. Time estimated. |
| April 2020 | Tornado (EF1) | Williston | - | A strong, long-track tornado began in Aiken Co SC, within the boundaries of the Savannah River Site, then moved in a general northeast direction. While in Aiken Co, the tornado was rated EF-3. The tornado then crossed into Barnwell Co SC, NW of the town of Williston near Davis Bridge Rd. In Barnwell Co, the tornado was rated as EF-1. The tornado continued to snap and uproot countless trees as it crossed Davis Bridge Rd, and New Forest Rd in N Barnwell Co. The tornado continued moving NE and crossed into Orangeburg Co SC. |
| June 2019 | Thunderstorm Wind | Williston | - | Trees down on Springfield Rd and Elko St. Time estimated. |
| April 2018 | Thunderstorm Wind | Williston | - | Trees down in roadway Fellowship Rd at Moonlight Rd. Time estimated. |
| August 2018 | Thunderstorm Wind | Williston | - | Power lines down on US Hwy 278 near Hwy 39. |
| June 2013 | Hail | Williston | - | Williston police reported 3/4 inch hail downtown. |
| June 2011 | Thunderstorm Wind | Williston | - | Sheriff's Dispatch reported trees down in Williston. |
| June 2011 | Hail | Williston | - | Sheriff's Dispatch reported dime to quarter size hail in Williston. |
| June 2009 | Hail | Williston | - | Public reported quarter size hail. |
| July 2008 | Hail | Williston | - | Nickel size hail reported by law enforcement in Williston. |
| July 2008 | Thunderstorm Wind | Williston | - | Spotter reported multiple trees down in the town of Williston. |
| March 2008 | Hail | Williston | - | Sheriff reported golf ball size hail between Blackville and Williston on hwy 78. |
| March 2008 | Tornado (EF0) | Williston | - | Survey found a brief touchdown along hwy 78. |
| June 2007 | Thunderstorm Wind | Williston | - | EM reported trees down in Williston on two homes doing minor damage. |
| April 2006 | Thunderstorm Wind | Williston | - | Utility company reported trees down on line |
| October 2006 | Hail | Williston | - | Sheriff and Williston police reported pea to penny size hail in and around Williston. |
| April 2005 | Thunderstorm Wind | Williston | - | Pilot reported numerous trees and powerlines down from Williston to Blackville. |
| May 2005 | Hail | Williston | - | Public called in a report of quarter size hail. |
| June 2004 | Hail | Williston | - | WAGT TV reported penny size hail in Williston. |
| December 2004 | Hail | Williston | - | Emergency Manager reported dime size hail in Williston. |
| March 2003 | Thunderstorm Wind | Williston | - | Sheriff reported trees down on powerlines on hwy 39. |
| March 2003 | Hail | Williston | - | Public called and reported dime size hail near Williston. |
| July 2003 | Thunderstorm Wind | Williston | - | Several trees down on hwy 78. |
| July 2003 | Thunderstorm Wind | Williston | - | Williston police reported trees down near Elko. |
| July 2002 | Hail | Williston | - | Public reported nickel size hail near Williston |
| July 2002 | Thunderstorm Wind | Williston | - | Newspaper reported several large trees down in Williston. |
| July 2002 | Hail | Williston | - | Newspaper reported quarter size hail in the Williston area. |
| June 2001 | Thunderstorm Wind | Williston | - | Sheriff reported trees down in the Williston area. |
| June 2001 | Thunderstorm Wind | Williston | - | Highway Maint. dept reported several trees down in the Williston area. |
| June 2000 | Thunderstorm Wind | Williston | - | Sheriff reported trees down. |
| July 2000 | Thunderstorm Wind | Williston | - | HWY DEPT reported trees down on hwy 39. |
| April 1999 | Hail | Williston | - | County EOC reported golf ball size hail along path of supercell. |
| July 1999 | Hail | Williston | - | Sheriff reported 3/4 inch hail. |
| June 1998 | Thunderstorm Wind | Williston | - | Utility company reported trees and powerlines down on highways 78 and 781. |
| June 1998 | Thunderstorm Wind | Williston | - | Sheriff reported trees down on highway 13. |
| April 1998 | Hail | Williston | - | Sheriff reports one inch hail. |
| July 1997 | Thunderstorm Wind | Williston | - | no account filed |
| April 1997 | Thunderstorm Wind | Williston | - | no account filed |