Instances Michigan Tech closed campus / cancelled classes.
Information sourced from alumni comments, past issues of Tech Alum Newsletter and local media. Comment below and help us fill in the blanks!
| Date | Reason Closed |
| Jan. 26, 1938 | Snow/Wind |
| Nov. 22, 1963 | Half Day; President Kennedy assassination |
| Nov. 25, 1963 | President Kennedy funeral [per Kenneth Kok] |
| 1964 | Half Day; Snow |
| Fall 1967 | Half Day; Power Outage [per Delbert Eggert] |
| Nov. 27, 1967 | Snow (road closures prevented students from returning from break) [per Tom Porritt] |
| May 1970 | Student Protests (following shootings at Kent State) [per John Baker] |
| Jan. 25, 1972 | 
Snow (perhaps only some professors canceled [per Jim Rosteck]) |
| Nov. 10, 1975 | Half Day; Power Outage (Day of the wreck of the Edmund Fitzgerald) [per Garth Bayette] |
| Nov. 11, 1975 | Power Outage (storm/high winds) [per Garth Bayette] |
| 1979 | Rain/Flooding [per Michael Sprague] |
| 1979 | Snow |
| Jan. 18, 1982 | Cold/Snow |
| 1983 | Half Day |
| Dec. 2, 1985 | 
“Thanksgiving Drive” Many roads closed – students unable to return to campus following Thanksgiving break. |
| Jan. 19, 1994 | Half Day; Cold (campus closed at noon) |
| Jan. 20, 1994 | Half Day; Cold (campus opened at noon) |
| Jan. 18, 1996 | Snow (also the day of the bank robbery/hostage situation at MFC-First National Bank in Houghton) Potentially a second day of closure that month [per Dulci Avouris and Brian Juopperi] |
| 1997 | Cold/Snow/Wind |
| 2000 | Cold/Wind |
| Sept. 11, 2001 | Half Day; 9/11 (maybe not an official closure) |
| Nov. 5, 2001 | Partial Campus Closure; Bomb threat at U.J. Noblet Forestry Building |
| Nov. 14-15, 2002 | Power Outage (electrical cable failure) [per J Haapala and Becky Ong] |
| Summer 2003 | Power Outage (Squirrel ate wires in a transformer) |
| Mar. 2, 2007 | 
Snow |
| Jan. 30, 2008 | 
Snow/Wind |
| Feb. 29, 2012 | Half Day; Snow/Wind |
| Feb. 19, 2013 | Half Day; Snow/Cold — Career Fair still held |
| Feb. 20, 2013 | Snow/Cold — Career Fair Interviews still held |
| Feb. 21, 2014 | Half Day; Snow/Wind |
| July 22, 2016 | Power Outage (repairing transformer problem in Daniell Heights) |
| June 18, 2018 | Flood — Day after Father’s Day Flood |
| Jan. 30, 2019 | Cold/Snow |
| Jan. 31, 2019 | Cold/Snow |
| Feb. 25, 2019 | Snow/Wind (25+ inches and gusts up to 68 MPH) |
| Nov. 27, 2019 | Half Day; Snow/Wind (Day before Thanksgiving, students on break) |