Fort Frances was the only community in northwestern Ontario to reach record low temperatures every day over the long weekend.
Three of those days the temperature plunged below the -40 mark with the coldest day Saturday at -43.3.
Dryden and Red Lake recorded record lows Friday and Sunday.
Ear Falls also set a new low Sunday at -37.8
The old mark was -34.4 in 1974.
An Extreme Cold Warning has ended.
Here is the weekend record wrap-up from Bill Laidlaw of Signal Weather Services:
Friday the 12
Dryden hit -36.7. Old mark was -35.1 set 1981
Fort Frances hit -40.9. Old mark was -40.0 set 1981
Kenora hit -34.8. Old mark was -33.9 set 1967
Red Lake hit -41.5. Old mark was -38.9 set 1981
Saturday the 13
Fort Frances hit -43.3. Old mark was -37.5 set 1981
Kenora hit -33.4. Old mark was -32.8 set 1999
Sunday the 14
Dryden hit -35.5. Old mark was -33.9 set 1974
Ear Falls hit -37.8. Old mark was -34.4 set 1974
Fort Frances hit -38.8. Old mark was -38.0 set 2020
Kenora hit -33.9. Old mark was -32.3 set 1990
Red Lake hit -36.8. Old mark was -36.1 set 2008
Monday the 15
Fort Frances hit -40.6. Old mark was -34.9 set 2020