| February 1999 | Thunderstorm Wind | Sterling | 1 hurt, $28,000 | no account filed |
| June 2009 | Thunderstorm Wind | Sterling | $25,000 | Wind gusts estimated to be 70 mph blew down a large tree at Avenue J and 6th St in Sterling, IL around 615 pm June 27. The tree snapped some power lines and blocked the road. Several other smaller branches were also blown down. |
| July 2003 | Lightning | Sterling | $20,000 | Large branch fell on house |
| July 2003 | Hail | Sterling | $20,000 | Tampico Rd. |
| June 2008 | Thunderstorm Wind | Sterling | $15,000 | Winds estimated to be 65 mph blew down several tree limbs on the west side of Sterling, IL around 11:05 am June 8. The limbs were over six inches in diameter. Some branches broke power lines and cable television lines. A power outage was also noted. |
| June 2010 | Thunderstorm Wind | Sterling | $10,000 | Wind gusts estimated to be 70 mph blew down 10 large trees at Emerald Hill Golf Course about 4 miles east northeast of Sterling, IL around 118 pm CST June 18. This report was relayed by a Rockford area television station. |
| August 2006 | Thunderstorm Wind | Sterling | $4,000 | A storm survey discovered numerous 3 to 5 inch diameter limbs down on the northwest side of the city. |
| August 2006 | Thunderstorm Wind | Sterling | $4,000 | A storm survey discovered numerous 2 to 12 inch diameter limbs down along highway 40 to the Sterling city limits. |
| May 1998 | Thunderstorm Wind | Sterling | $1,000 | Thunderstorm winds downed trees and limbs in Northeast Whiteside county. |
| May 2024 | Thunderstorm Wind | Sterling | - | A tree limb was blown down. Time estimated from radar data. |
| July 2022 | Thunderstorm Wind | Sterling | - | A public report of several large tree branches down. The time of the event was estimated using radar. |
| May 2020 | Thunderstorm Wind | Sterling | - | Several reports of tree damage and power pole damage received from the Sterling Rock Falls area. There are numerous power outages on the north side of the city of Sterling. |
| July 2020 | Tornado (EFU) | Sterling | - | A video posted on social media confirmed a landspout tornado in a field behind a Menards store on the northeast side of Sterling, Illinois. The tornado was brief and occurred in an open field. No damage was observed to assign an EF-Scale rating. |
| February 2018 | Flood | Sterling | - | Emergency management relayed widespread flooding of farms and roads near the Rock River, associated with major river flooding, as well as ice jam activity. At the Joslin, Illinois Rock River gauge exceeded major flood stage of 16.5 feet, at 240 PM, February 22nd, and fell back below major flood stage at 2 AM, February 26th. The Rock River at Joslin crested at 18.31 feet, at 115 PM, February 23rd. |
| February 2017 | Hail | Sterling | - | A spotter reported dime size hail. |
| February 2017 | Hail | Sterling | - | A spotter reported hail slightly larger than golf balls. |
| August 2016 | Flash Flood | Sterling | - | The public reported that there was significant water flowing across roads. Yards and parking lots were also flooded. |
| July 2016 | Thunderstorm Wind | Sterling | - | Strong winds blew a tree onto power lines and damaged the power pole. |
| June 2015 | Tornado (EF1) | Sterling | - | Hardwood trees and trunks were snapped, with peak wind speed of 100 mph on this short tornado spin up. |
| June 2015 | Hail | Sterling | - | Hail was reported near Applebees restaurant, on Route 2. |
| June 2015 | Flash Flood | Sterling | - | Severe street flooding was reported in Sterling and Rock Falls. Water was at least 3 feet deep in streets. Several cars were stalled and pushed to higher ground. Sewer systems were inundated and water supply shut down. |
| November 2015 | Thunderstorm Wind | Sterling | - | The Sterling Police Department reported a few power lines down along with a few tree branches around 4 inches in diameter. The time is based on radar. |
| August 2014 | Thunderstorm Wind | Sterling | - | Wind gusts estimated to be 60 mph blew down a tree limb in Sterling, IL around 230 pm CDT August 25. |
| May 2013 | Thunderstorm Wind | Sterling | - | A trained spotter reported trees and power lines blown down. |
| May 2013 | Thunderstorm Wind | Sterling | - | A trained spotter measured 60 mph winds. |
| May 2013 | Thunderstorm Wind | Sterling | - | A large tree was down on power lines near town. |
| June 2013 | Thunderstorm Wind | Sterling | - | A trained spotter reported a wind gust of 70 mph. |
| August 2012 | Thunderstorm Wind | Sterling | - | A few large diameter tree limbs down. |
| July 2012 | Thunderstorm Wind | Sterling | - | The public reported several large diameter tree limbs down on the northwest side of Sterling. There were also reports of power outages. |
| July 2011 | Thunderstorm Wind | Sterling | - | Wind gusts estimated to be 70 mph were observed in Sterling, IL at 653 am CDT July 11. Reports of trees and large limbs down on power lines in Sterling near the Sinnissippi Park. A number of residents in Whiteside County were left without power in the wake of the storm. |
| August 2011 | Hail | Sterling | - | Hail fell for 1 to 2 minutes with hailstones varying in size from pea to quarter sized. |
| June 2010 | Thunderstorm Wind | Sterling | - | Wind gusts estimated to be 60 mph blew down some large tree limbs in Sterling, IL at 239 pm June 18. |
| July 2009 | Flash Flood | Sterling | - | Heavy rains resulted in flash flooding of a portion of Highway 40 in Sterling, IL during the late evening hours of July 24. The roadway had to be closed for a time due to water over the road. |
| May 2008 | Hail | Sterling | - | A trained spotter measured penny size hail near Sterling. |
| May 2008 | Hail | Sterling | - | A trained spotter measured nickel size hail in Sterling. |
| May 2008 | Hail | Sterling | - | A trained spotter estimated dime to quarter size hail fell for 6 minutes in Sterling. |
| June 2008 | Thunderstorm Wind | Sterling | - | A 60 mph wind gust was measured in Sterling, IL at 11:35 pm June 12. |
| August 2008 | Thunderstorm Wind | Sterling | - | Wind gusts estimated to be 65 mph blew down some large tree limbs eight inches in diameter across some roads 2 to 5 miles northeast of Sterling, IL at 633 pm August 4. |
| June 2007 | Thunderstorm Wind | Sterling | - | Many trees and power lines were blown down by wind estimated at 70 mph. |
| June 2007 | Thunderstorm Wind | Sterling | - | Many trees and power lines were blown down throughout Sterling by wind estimated at 70 mph. |
| April 2006 | Heavy Rain | Sterling | - | 1.05 inches of rain |
| April 2006 | Hail | Sterling | - | pea to penny size hail |
| May 2006 | Thunderstorm Wind | Sterling | - | Straight line winds & torrential rain; unsubstantiated reports of lightning damage to a department store and a high tension line down east of the city. |
| May 2006 | Thunderstorm Wind | Sterling | - | Measured gust on wind equipment; also pea size hail |
| October 2006 | Hail | Sterling | - | Hail from penny to nickel size for about 10 minutes. |
| October 2006 | Hail | Sterling | - | Penny size hail covered the ground. |
| August 2005 | Heavy Rain | Sterling | - | Water ponding on some streets. |
| September 2005 | Thunderstorm Wind | Sterling | - | A spotter estimated wind gusts at 60 mph. |
| July 2002 | Thunderstorm Wind | Sterling | - | Numerous tree limbs and several power lines blown down. |
| July 2001 | Heavy Rain | Sterling | - | 2.92 inches of rain fell in 2 hours, filling ditches and ponding on streets. Reported by a trained storm spotter. |
| October 2001 | Hail | Sterling | - | 0.75 inch hail reported by trained spotter. |
| April 2000 | Hail | Sterling | - | Pea-sized hail reported by trained spotter. |
| June 1995 | Hail | Sterling | - | A small band of severe thunderstorms moved southeast out of Minnesota and Wisconsin into northwest Illinois during the late afternoon and early evening hours. Numerous tree limbs were blown down in Sterling. Nickel size hail was reported but little if any hail damage reported. |
| June 1995 | Thunderstorm Wind | Sterling | - | A small band of severe thunderstorms moved southeast out of Minnesota and Wisconsin into northwest Illinois during the late afternoon and early evening hours. Numerous tree limbs were blown down in Sterling. Nickel size hail was reported but little if any hail damage reported. |
| February 2017 | Hail | Sterling | - | no account filed |
| June 2015 | Hail | Sterling | - | no account filed |
| June 2011 | Hail | Sterling | - | no account filed |
| June 2011 | Hail | Sterling | - | no account filed |
| April 2007 | Hail | Sterling | - | no account filed |
| October 2006 | Hail | Sterling | - | no account filed |