| August 2006 | Thunderstorm Wind | Belvidere | $400,000 | Huge trees and 40 to 50 power lines blown down. A roof was blown off a house and a semi trailer was blown over. |
| April 2014 | Hail | Belvidere | $250,000 | Hail to two inches in diameter was estimated on Route 76 near Poplar Grove Airport. Shopping centers in the area reported heavy damage from hail. A Walmart had 129 skylights damaged or broken while a ShopKo was also damaged by the hail. |
| August 2007 | Flash Flood | Belvidere | $100,000 | Several roads and many basements were flooded after 4 to 6 inches of rain fell over southern Boone County in a short period of time. Motorists flooded on Appleton Road near Route 20. |
| July 2011 | Thunderstorm Wind | Belvidere | $25,000 | Numerous trees fell across Belvidere causing damage to powerlines and roofs. One tree fell against a house on Garden Drive while another fell onto a roof on East Lincoln Avenue. |
| July 2016 | Flash Flood | Belvidere | $24,000 | Multiple roads flooded and closed on the south side of town. Belvidere Police Department had to replace a police car damaged by flood waters. |
| April 2015 | Tornado (EF0) | Belvidere | $20,000 | This was a satellite tornado that formed from the same storm that formed the long tracked EF-4 tornado. A small zoo was heavily damaged with walls collapsed on several outbuildings and small barns. Three animals were killed. Softwood trees 4 to 6 inches in diameter were snapped. The estimated peak wind was 85 mph. (Tornado 5 of 7). |
| July 2003 | Thunderstorm Wind | Belvidere | $6,000 | no account filed |
| September 2012 | Thunderstorm Wind | Belvidere | $5,000 | Windows were blown out of a building. |
| July 2008 | Lightning | Belvidere | $5,000 | Lightning struck a home on Ruth Circle but only caused damage to cables and appliances, no fire or structural damage was reported. |
| August 2016 | Flash Flood | Belvidere | $2,000 | Car stalled in deep water and other flooded roads around town. |
| July 2008 | Thunderstorm Wind | Belvidere | $1,000 | Trees and power lines were blown down. |
| June 1995 | Thunderstorm Wind | Belvidere | $1,000 | Trees and limbs were blown down, knocking out power. |
| July 1995 | Thunderstorm Wind | Belvidere | $1,000 | Windows were blown in at the Belvidere Oasis over the Interstate 90 tollway. |
| June 2010 | Thunderstorm Wind | Belvidere | $500 | An aluminum flag pole was blown down and a six inch diameter tree was blown down. |
| June 2025 | Thunderstorm Wind | Belvidere | - | Extensive tree damage was reported along Distillery Rd outside of Belvidere. One tree trunk was snapped a few feet off the ground and multiple large tree limbs were downed, some of them onto power lines. |
| June 2025 | Tornado (EF0) | Belvidere | - | A brief EF0 tornado with peak estimated winds of 85 mph touched down northwest of Belvidere. Photos shared by the Boone County EMA show that a concentrated area of tree damage occurred at and across the street from a property along Distillery Road south of US Rt. 20. Multiple trees were uprooted or snapped, and several large tree limbs and branches were downed as well, including some that fell onto powerlines. |
| August 2025 | Thunderstorm Wind | Belvidere | - | Trees 3 to 4 feet in diameter were snapped along N Appleton Rd between Douglas and Maryland courts in Belvidere. |
| August 2025 | Thunderstorm Wind | Belvidere | - | Boone County EM reported numerous trees down on the southeast side of Belvidere. |
| August 2025 | Thunderstorm Wind | Belvidere | - | Two trees two feet in diameter were downed and branches 6 to 12 inches in diameter were broken near Gardner and Jackson streets in Belvidere. |
| August 2025 | Thunderstorm Wind | Belvidere | - | Seven trees were downed on the corner of 2nd St and Whitney Blvd, the largest being about 4 feet in diameter. Power lines were also reported down. |
| July 2024 | Flood | Belvidere | - | Street flooding was reported in Belvidere. |
| June 2024 | Heavy Rain | Belvidere | - | A 24 hour rainfall of 3.8 was recorded in Belvidere. |
| July 2024 | Flood | Belvidere | - | Two to three inches of water caused lane blockage on Logan Avenue from East Avenue to Jamestown Avenue. |
| June 2023 | Hail | Belvidere | - | Multiple quarter size hail reports were received from Belvidere. |
| July 2023 | Thunderstorm Wind | Belvidere | - | Broken power poles and tree limbs up to 3 inches in diameter were reported broken in Belvidere via mPING. |
| March 2022 | Thunderstorm Wind | Belvidere | - | A tree was snapped in half. |
| July 2022 | Thunderstorm Wind | Belvidere | - | A 40 foot tall tree was blown down onto power lines near Lincoln Avenue and Appleton Road. Tree limbs were also blown down in Belvidere. |
| November 2022 | Thunderstorm Wind | Belvidere | - | Tree damage and power lines blown down were reported across many areas of Boone County. |
| July 2021 | Thunderstorm Wind | Belvidere | - | A tree limb was blown down into a yard that also brought down some wires. |
| August 2021 | Flood | Belvidere | - | Flooding of small streams and ditches was reported. |
| August 2021 | Thunderstorm Wind | Belvidere | - | Trees and power lines were blown down in various locations in and around Belvidere. |
| November 2020 | Thunderstorm Wind | Belvidere | - | About 30 feet of the roof was blown off of the Chrysler Plant. |
| November 2020 | Thunderstorm Wind | Belvidere | - | Damage was reported to utility poles. |
| November 2020 | Thunderstorm Wind | Belvidere | - | Numerous trees and power lines were blown down across Boone County. |
| May 2017 | Thunderstorm Wind | Belvidere | - | A few large branches were blown down onto power lines. |
| July 2017 | Thunderstorm Wind | Belvidere | - | Wind gusts were estimated to 70 mph at the Boone County Fairgrounds. |
| July 2017 | Hail | Belvidere | - | Quarter size hail was reported at multiple locations. |
| June 2017 | Tornado (EF1) | Belvidere | - | An EF-1 tornado with maximum winds of 100 mph touched down west of the intersection of Huber and Genoa Roads and lifted east of the intersection of Huber and Fern Hill Roads. The tornado was on the ground for 1.6 miles. Damage was mainly to trees with a few homes experiencing property damage. |
| June 2017 | Hail | Belvidere | - | Nickel size hail was reported 2 miles north of Belvidere. |
| June 2017 | Hail | Belvidere | - | Quarter to half dollar size hail was reported in numerous locations including near north State Street and The William Grady Pool. |
| June 2017 | Flood | Belvidere | - | One foot of water was reported near Garden Drive and Ruby Street. |
| July 2016 | Thunderstorm Wind | Belvidere | - | Numerous large branches downed in the city. Radar estimated time. |
| August 2016 | Thunderstorm Wind | Belvidere | - | Branches and small trees downed on Newburg Rd. Report relayed via WTVO Rockford. |
| August 2014 | Thunderstorm Wind | Belvidere | - | Tree limbs and power lines were blown down in Belvidere. |
| May 2013 | Hail | Belvidere | - | Nickel size hail was reported along Julien Street. |
| May 2011 | Hail | Belvidere | - | Quarter size hail was reported between Interstate 90 and Highway 20 near Genoa Road. |
| June 2011 | Hail | Belvidere | - | Hail from marble size to golfball size was reported. |
| July 2010 | Flash Flood | Belvidere | - | Chrysler Drive east of Appleton Road was closed due to flooding. |
| June 2009 | Flood | Belvidere | - | Four to six inches of standing water was reported in the streets at multiple locations. |
| June 2009 | Hail | Belvidere | - | Golf ball size hail was reported near 5th Avenue and 6th Street. |
| September 2007 | Thunderstorm Wind | Belvidere | - | Two small trees were blown down. |
| May 2006 | Flood | Belvidere | - | Street flooding reported in Belvidere. |
| July 2006 | Thunderstorm Wind | Belvidere | - | Numerous trees were blown down in southern Boone County. |
| August 2006 | Thunderstorm Wind | Belvidere | - | A fifteen inch diameter tree limb was blown down. Several other smaller limbs were blown down. |
| August 2006 | Flood | Belvidere | - | North Avenue in Belvidere was closed due to high water Friday night and reopened Saturday morning. Storm total rainfall in Belvidere was 4.60 inches. |
| September 2005 | Thunderstorm Wind | Belvidere | - | Trees and power lines were blown down. |
| May 2004 | Thunderstorm Wind | Belvidere | - | Large tree branches were down. |
| July 1998 | Flood | Belvidere | - | Heavy rain from thunderstorms caused flooding in a trailer park on the southeast side of Belvidere. A cooperative observer on the southwest side of Belvidere recorded 1.3 inches of rain. |
| April 2026 | Hail | Belvidere | - | no account filed |
| April 2026 | Hail | Belvidere | - | no account filed |