| June 2015 | Tornado (EF2) | Maytown | 7 hurt, $1,000,000 | Very significant tree damage occurred with many large trees snapped or uprooted in Woodhaven Lakes Camping Resort. At least one house was pushed off of its foundation. Several trees fell onto recreational vehicles and it was estimated that around 100 of the 300 homes in the area received some degree of damage. One person was taken to the hospital in serious condition, and six others were injured. Peak winds were estimated to be 130 mph. (Tornado 3 of 10). |
| April 1972 | Tornado (F2) | not stated | 6 hurt, $250,000 | no account filed |
| June 2001 | Thunderstorm Wind | Countywide | 1 hurt, $55,000 | no account filed |
| May 1986 | Tornado (F1) | not stated | 1 hurt, $25,000 | no account filed |
| April 2015 | Tornado (EF1) | Franklin Grove | $1,000,000 | This is the beginning of the Rochelle-Fairdale EF-4 tornado. At its strongest, peak winds were estimated to be 200 mph. The tornado touched down just northeast of Franklin Grove. A large sheet metal building on IL-38 collapsed with failure of column anchorage. Several smaller sheet metal buildings were destroyed along E Gurler Road. Peak winds in Lee County were estimated to 110 mph. The tornado continued into Ogle County. (Tornado 2a of 7). |
| April 1967 | Tornado (F1) | not stated | $250,000 | no account filed |
| August 1958 | Tornado (F2) | not stated | $250,000 | no account filed |
| June 2013 | Thunderstorm Wind | Harmon | $100,000 | Winds were estimated in excess of 80 mph and upwards of 100 mph for a 13 mile swath. A large outbuilding bolted to its foundation was destroyed. One part of the barn wall was lifted taking a portion of the foundation with it. Numerous large trees were snapped or uprooted, including one that fell onto the front portion of a house. In Walton, four large grain storage bins were destroyed. Also in Walton, a metal outbuilding was destroyed with debris thrown over 200 yards. Shingle damage was also noted on a few homes. |
| October 2010 | Tornado (EF1) | Ashton | $100,000 | A tornado touched down near Meridian Road southeast of Ashton. The damage path was convergent and narrow. Some of the damage included a couple of outbuildings with poor structural integrity and a few that had their roofs ripped off. The top of a metal silo was 'punched' in and a grain cart was flipped onto its side. In addition to the structural damage, numerous 2x4's were speared into the ground and metal siding was strewn into the fields to the northeast of the farm. |
| March 2009 | Thunderstorm Wind | Dixon | $30,000 | A garage was destroyed. A roof was blown off a building and trees were blown down. |
| April 1991 | Tornado (F1) | not stated | $25,000 | no account filed |
| May 1988 | Tornado (F0) | not stated | $25,000 | no account filed |
| April 1967 | Tornado (F2) | not stated | $25,000 | no account filed |
| September 1959 | Tornado (F1) | not stated | $25,000 | no account filed |
| June 2010 | Thunderstorm Wind | Eldena | $20,000 | A roof was blown off a building near Route 52 and Robbins Road. Numerous trees were blown down along Route 30. |
| June 2009 | Thunderstorm Wind | Walton | $20,000 | A barn was destroyed. Trees were also blown down. |
| July 2004 | Thunderstorm Wind | Amboy | $20,000 | A roof was blown off the addition of a house and into a barn. Many rows of corn were knocked down. These events occurred at Bryer Knoll and Rocky Ford. |
| June 2013 | Tornado (EF0) | Harmon | $10,000 | The tornado mainly traveled over farm fields but did take down numerous utility poles, including a few that were bent sharply to the south, opposite of the storm motion which was to the northeast. A weakly constructed barn was destroyed near the end of the path. |
| May 2010 | Flash Flood | Lincoln Hgts | $10,000 | River Road was closed one half mile east of Galena Avenue with a car stranded in flood water up the bumpers. Six to eight inches of water was reported at the intersection of Route 2 and Willett Avenue. High standing water was reported in many areas in Dixon. Storm total rainfall of 2.73 inches was reported 3 miles north northwest of Dixon. |
| August 2014 | Thunderstorm Wind | Ashton | $5,000 | A grain storage bin was damaged by severe winds. |
| June 2013 | Thunderstorm Wind | Sublette | $5,000 | Up to 18 inch diameter trees were blown down as well as numerous power lines. |
| June 2010 | Thunderstorm Wind | West Brooklyn | $5,000 | A large tree was blown down onto an above ground pool. The pool was destroyed. |
| June 2010 | Thunderstorm Wind | Sublette | $5,000 | Two trees blew down along U.S. 52. Portable toilets blew over at a park. Part of the roof of a maintenance building blew off. |
| August 2008 | Thunderstorm Wind | Compton | $5,000 | Wind gusts were estimated to 80 mph. Multiple one foot diameter trees were blown down. Shingles were also blown off of houses. |
| August 2007 | Thunderstorm Wind | Franklin Grove | $5,000 | Utility poles blown down. |
| August 2006 | Lightning | Dixon | $5,000 | Lightning struck a utility pole, the pole and power lines caught on fire. |
| August 2006 | Thunderstorm Wind | Amboy | $5,000 | Wind gusts were estimated to 70 mph, which blew down trees, tree limbs and power lines. |
| April 2010 | Thunderstorm Wind | Franklin Grove | $3,000 | Two utility poles and a power line were blown down near Daysville and Nalor Roads. |
| May 1985 | Tornado (F1) | not stated | $2,500 | no account filed |
| June 1975 | Tornado (F1) | not stated | $2,500 | no account filed |
| August 1956 | Tornado (F2) | not stated | $2,500 | no account filed |
| August 2016 | Flash Flood | Harmon | $2,000 | A foot of water moving across Pump Factory Rd between Amboy Rd and McCoy Rd approximately 10 miles south of Dixon. |
| June 2007 | Thunderstorm Wind | Dixon | $2,000 | Trees and power lines were blown down. |
| November 2010 | Thunderstorm Wind | Dixon | $1,000 | Trees and power lines were blown down. |
| June 2010 | Thunderstorm Wind | Amboy | $1,000 | Trees, tree limbs and power lines were blown down. |
| June 2010 | Thunderstorm Wind | Dixon | $1,000 | A tree was blown down across a road. Power lines and a utility pole were also blown down. |
| June 2009 | Thunderstorm Wind | Dixon | $1,000 | Trees and power lines were blown down. |
| June 2007 | Thunderstorm Wind | Dixon | $1,000 | Tree limbs were blown down onto powerlines. |
| May 2006 | Thunderstorm Wind | Dixon | $1,000 | Trees and power lines were blown down. |
| June 2010 | Thunderstorm Wind | Dixon | $500 | A street light pole was blown down. |
| June 1975 | Tornado (F0) | not stated | $250 | no account filed |
| June 1975 | Tornado (F0) | not stated | $250 | no account filed |
| April 2026 | Tornado (EF1) | Prairieville | - | An NWS damage survey confirmed that an EF-1 tornado with estimated peak winds of 100 mph began in far northeastern Whiteside County west of Palmyra before moving northeast into Lee County. It tracked for over 6.5 miles before lifting near the town of Woosung. The tornado damaged or destroyed multiple farm outbuildings, downed several trees and power poles, and caused minor damage to a few residences. |
| April 2026 | Thunderstorm Wind | Dixon | - | An emergency manager estimated 60 to 70 mph thunderstorm winds in Dixon. |
| May 2025 | Thunderstorm Wind | Kingdom | - | A photo shared on social media showed several utility poles leaning over Route 2, resulting in power outages. |
| July 2025 | Thunderstorm Wind | West Brooklyn | - | Tree limbs up to 6 inches in diameter were blown down near Brooklyn Road and Route 30. Corn was blown over at 35 to 40 degree angles. |
| July 2025 | Hail | Franklin Grove | - | A Cocorahs obsever in Amboy reported totally destroyed soybean and corn crops six miles north of his location, which would be just south of Interstate 88. |
| August 2025 | Flash Flood | Paw Paw | - | A couple of rounds of torrential rainfall brought flash flooding to parts of southeast Lee County. A video shared to social media showed a house in the Paw Paw area surrounded by floodwater with significant flooding in the yard and in nearby fields. Paw Paw Rd was flooded approximately one mile north of Paw Paw. In Compton, water was seen flowing over roads and parking lots. A private weather station in Paw Paw recorded 7.02 of storm total rain, 5.03 of which fell between 3:15 and 5:15 CST. Another private weather station near Dunn Airport northwest of Paw Paw recorded 4.67 of storm total rainfall. The flooding is estimated to have resulted in $5,000 worth of damages, mostly to crops. |
| February 2024 | Tornado (EF0) | Paw Paw Airport | - | A brief tornado, which was sighted by storm chasers, touched down along Beemerville Road northeast of Compton and caused roof damage to a farm outbuilding. |
| February 2024 | Hail | Sublette | - | Photo received of golf ball sized hail. |
| February 2024 | Hail | Maytown | - | A report of 1 hail was relayed via mPING. |
| March 2024 | Hail | Dixon | - | Quarter size hail was reported on the north side of Dixon. |
| June 2024 | Thunderstorm Wind | Grand Detour | - | A picture was received of a downed tree near Dixon. |
| July 2024 | Thunderstorm Wind | Lee | - | A large tree limb was blown down. |
| June 2024 | Heavy Rain | Walton | - | Private weather KILDIXON53 recorded 2.71 inches of rain in an hour and a half's time. 2.28 inches of that fell in 40 minutes with over an inch being recorded in a 15 minute span. |
| March 2023 | Tornado (EF1) | Sublette | - | This tornado developed just south of the town center of Sublette snapping multiple utility poles as it crossed US Rt. 52. The tornado strengthened as it progressed into the town of West Brooklyn. There, it downed several large trees, folded an approximately 120-foot tall tower, and tore the roof off of a bank in downtown West Brooklyn. A wooden beam from the roof of the bank impaled a nearby garage roof to the north-northeast of the bank. The tornado then lifted north of Shaw Rd just west of Carnahan Rd just over 2 miles northeast of West Brooklyn. |
| March 2023 | Thunderstorm Wind | Maytown | - | A photo shared by the public via social media shows a barn that had been destroyed. Wind magnitude and time were estimated based on radar. |
| March 2023 | Tornado (EF2) | Woodhaven Lakes | - | The tornado touched down in the Woodhaven Lakes campground south of Amboy. There, multiple campers were damaged by the tornado including two that were rolled. Farther along its northeastward track, two trees had fallen onto a home destroying it. The tornado appeared to have reached its maximum intensity with wind speeds estimated at 115 mph shortly after crossing US Hwy 52 where it destroyed a large garage and snapped several trees at their trunks. Several dozen other large trees were snapped and many branches sheared off along its path. Toward the end of its lifespan, the tornado also did minor damage to an outbuilding before lifting near Butler Hill Rd north of West Brooklyn. |
| April 2023 | Thunderstorm Wind | Woodland Shores | - | A semi truck was blown over on Interstate 88 near Atkinson Road. |
| April 2023 | Thunderstorm Wind | (C73) Dixon Municipal Airport | - | A private weather station measured a wind gust to 66 mph with an abrupt wind shift from easterly to westerly, then back to easterly. |