| September 2010 | Flood | Trempealeau | $3,290,000 | Flooding occurred to rivers, creeks, streams, and low-lying areas throughout the county as very heavy rains fell over saturated soils. This caused numerous county and township road closures across the county, as well as closures of main highways including U.S. Highway 53 between Ettrick and Blair, State Highway 93 between Arcadia and Independence, State Highway 121 between Independence and Whitehall, and State Highway 95 from in the city of Blair to the Jackson County line. The city park in Blair was completely underwater, while a few businesses had some flood damage. In Whitehall, a trailer park was impacted. A 60 yard stretch of railroad tracks was underwater and partially washed out near County Road J by Dodge. Throughouth the county, forty-two homes incurred minor damage and 2 homes saw major damage, while 13 businesses had minor damage and 5 had major damage. The majority of these damaged homes and businesses happened in Arcadia. Also, several schools were closed Thursday and Friday due to road closures in the districts. Although rain fell through much of the day on the 23rd, the majority had fallen by 10 a.m. that morning. Some rainfall totals around the county as of 10 a.m. CST on the 23rd include 5.00 inches at both Trempealeau and Blair and 4.89 inches near Whitehall. |
| June 2021 | Hail | Trempealeau | $885,000 | Golf ball sized hail fell in Trempealeau. |
| December 2021 | Tornado (EF0) | Trempealeau | $520,000 | This short-lived EF0 tornado likely formed over the Mississippi River, moved inland and across a portion of Perrot State Park before dissipating on the very western edge of Trempealeau. Extensive tree damage occurred in the state park and several homes were damaged when trees fell on them. |
| July 2017 | Hail | Trempealeau | $390,000 | Hail, ranging in size from eggs and baseballs up to 3.5 inches in diameter, fell in Trempealeau. The 3.5 inch diameter hail broke numerous windows at a mobile home park. |
| July 2024 | Flood | Trempealeau | $70,000 | Significant rainfall throughout June pushed the Mississippi River at Trempealeau into flood stage in June and continued into July. The river stage crested during the morning on July 2nd in moderate flood stage at 649.72 ft. |
| July 2020 | Thunderstorm Wind | Trempealeau | $35,000 | Five power poles were blown down just north of Trempealeau. |
| May 2017 | Thunderstorm Wind | Trempealeau | $30,000 | Numerous trees were blown down on houses and cars in Trempealeau. |
| August 1998 | Thunderstorm Wind | Trempealeau | $15,000 | no account filed |
| June 1998 | Thunderstorm Wind | Trempealeau | $12,000 | no account filed |
| July 1997 | Thunderstorm Wind | Trempealeau | $10,000 | no account filed |
| August 2000 | Hail | Trempealeau | $7,500 | no account filed |
| December 2021 | Thunderstorm Wind | Trempealeau | $5,000 | Trees were blown down in Trempealeau. |
| June 1997 | Thunderstorm Wind | Trempealeau | $5,000 | no account filed |
| June 1998 | Thunderstorm Wind | Trempealeau | $3,500 | A boat capsized on the Mississippi River from strong wind gusts. |
| June 2013 | Thunderstorm Wind | Trempealeau | $3,000 | Trees and power poles were blown down near Lock and Dam 6 in Trempealeau. |
| July 2008 | Thunderstorm Wind | Trempealeau | $1,500 | Law Enforcement estimated 60 mph wind gusts at Perrot State Park and large limbs down. |
| July 2003 | Thunderstorm Wind | Trempealeau | $1,500 | no account filed |
| August 2023 | Thunderstorm Wind | Trempealeau | $1,000 | Sherriff's Office reported fallen trees on County Road K near the Town of Trempealeau. |
| June 2007 | Thunderstorm Wind | Trempealeau | $500 | no account filed |
| May 2025 | Hail | Trempealeau | - | The public reported quarter sized hail in Trempealeau. The report was relayed via social media. |
| May 2025 | Hail | Trempealeau | - | The public reported quarter sized hail 1 mile northwest of Trempealeau. |
| July 2025 | Thunderstorm Wind | Trempealeau | - | A National Weather Service Employee reported numerous trees down in Perrot State Park. |
| July 2024 | Hail | Trempealeau | - | The public reported quarter sized hail in Trempealeau. The report was relayed via social media. |
| July 2024 | Hail | Trempealeau | - | The public reported quarter sized hail in Trempealeau via Facebook. |
| July 2024 | Hail | Trempealeau | - | The public reported ping pong ball sized hail in Trempealeau. |
| May 2024 | Thunderstorm Wind | Trempealeau | - | The public reported a large tree snapped, blocking a portion of South Street. |
| June 2024 | Flood | Trempealeau | - | Significant rainfall throughout June pushed the Mississippi River at Lansing into flood stage on June 23rd. The river stage continued to rise through the end of the month increasing from minor to moderate stage on during the evening on June 28th. |
| April 2023 | Flood | Trempealeau | - | Significant upstream runoff from the combination of rainfall and melting snow pushed the Mississippi River at Trempealeau into flood stage on April 16th. The crest of 651.01 ft above sea level on April 25 was 4.01 ft over flood stage. Lake Road abutting the Mississippi River was closed due to water over the roadway. |
| May 2023 | Flood | Trempealeau | - | Significant upstream runoff from the combination of heavy rainfall and rapidly melting snow resulted in the fourth highest crest on record at the Trempealeau Dam towards the end of April. Subsequent dry conditions allowed the Mississippi River to slowly recede and drop below minor flood stage at Trempealeau Dam on May 7th. |
| October 2023 | Hail | Trempealeau | - | A volunteer observer reported ping pong sized hail near the Town of Trempealeau. |
| April 2021 | Hail | Trempealeau | - | Quarter sized hail was reported in Trempealeau. |
| April 2021 | Hail | Trempealeau | - | Half dollar sized hail was reported in Trempealeau. |
| June 2020 | Heavy Rain | Trempealeau | - | Northwest of Trempealeau, 3.20 inches of rain fell. |
| June 2020 | Hail | Trempealeau | - | Quarter sized hail fell in Trempealeau. |
| June 2020 | Hail | Trempealeau | - | Half dollar sized hail fell near Trempealeau. |
| June 2020 | Hail | Trempealeau | - | Quarter sized hail fell northwest of Trempealeau. |
| September 2016 | Hail | Trempealeau | - | Half dollar sized hail fell in Trempealeau. |
| June 2015 | Hail | Trempealeau | - | Half dollar sized hail fell in Trempealeau. |
| June 2015 | Hail | Trempealeau | - | Quarter sized hail fell in Perot State Park near Trempealeau. |
| June 2015 | Hail | Trempealeau | - | Quarter sized hail fell just north of Trempealeau. |
| July 2013 | Hail | Trempealeau | - | Quarter sized hail was reported in the village of Trempealeau. |
| August 2012 | Hail | Trempealeau | - | Quarter sized hail fell for around 10 minutes at Perrot State Park. |
| August 2010 | Heavy Rain | Trempealeau | - | Rainfall amounted to 2.20 inches between 5:30 a.m. and 6:45 a.m. CST, with 1.80 inches falling in the first 45 minutes. |
| September 2010 | Heavy Rain | Trempealeau | - | The storm total rainfall amounted to 4.73 inches. |
| April 2022 | Hail | Trempealeau | - | no account filed |
| September 2016 | Hail | Trempealeau | - | no account filed |
| July 2015 | Hail | Trempealeau | - | no account filed |
| July 2015 | Hail | Trempealeau | - | no account filed |
| July 2013 | Hail | Trempealeau | - | no account filed |
| April 2002 | Hail | Trempealeau | - | no account filed |
| May 2000 | Hail | Trempealeau | - | no account filed |