One record dates back to 1955. Also extreme cold – down to -67 F.
NEW BRUNSWICK
Issued by Environment Canada
The following stations set a daily minimum temperature record on February 12, 2017:
Bas Caraquet
New record of -25.4 C (-13.7 F)
Old record of -24.5 C (-12.1 F) set in 1993
Records in this area have been kept since 1964
Bouctouche
New record of -27.8 C (-18.0 F)
Old record of -27.2 C (-17.0 F) set in 1973
Records in this area have been kept since 1965
 
PRINCE EDWARD ISLAND
 
Summerside
New record of -26.6 C (-15.9 F)
Old record of -25.0 C (-13.0 F) set in 1955
Records in this area have been kept since 1898
http://weather.gc.ca/warnings/weathersummaries_e.html

NEW BRUNSWICK
The following station set a daily minimum temperature record on February 11, 2017:
Grand Manan
New record of -22.2 C (-8.0 F)
Old record of -21.9C (-7.4 F) set in 2005
Records in this area have been kept since 1883
 
http://weather.gc.ca/warnings/weathersummaries_e.html

BRITISH COLUMBIA
11 February 2017 –  Winter storm warning for North Coast – inland sections region
Total snowfall amounts near Stewart are forecast to reach 30 to 50 cm (11.8″ to 19.7″) by Sunday afternoon.
http://weather.gc.ca/warnings/report_e.html?bc9#1246303881084760540201702110502ww1171cwvr
Blizzard warning for South Klondike Highway – Yukon border to White Pass region
Total snowfall accumulation of 30 cm (11.8″) or more are expected with wind gusts to 90 km/h (55.9 mph) creating near zero visibility in blowing snow. The snow and winds will begin to ease after midnight as the system moves to the east.
http://weather.gc.ca/warnings/report_e.html?bc52#15827030361572579201702110502ww1979cwvr
NORTHWEST TERRITORIES
Extreme Cold Warning for South Delta Region including Ft. McPherson – Tsiigehtchic and Tuktoyaktuk – East Channel Region
The coldest wind chill values will be between minus 50 C and minus 55C (-59 F to -67 F).
http://weather.gc.ca/warnings/report_e.html?nt26#42156705932521956201702110501ww1272cwnt (also nt23 in the address link for the Tuktoyaktuk – East Channel Region warning)
NUNAVUT
Extreme Cold Warning for Cambridge Bay, Gjoa Haven, Kugaaruk, Kugluktuk and Taloyoak regions
The coldest wind chill values will be between minus 55 C and minus 60 C (-67 F to -76 F).
http://weather.gc.ca/warnings/report_e.html?nu7#1511482001795014178201702100501ww1474cwnt (also nu8, nu10, nu6 and nu9 in the address link for the other affected areas)
Extreme Cold Warning for Hall Beach region
Temperatures around the -40 C (-40 F) mark combined with 15-20 km/h (9.3 to 12.4 mph) winds will result in wind chill values near -55 C (-67 F).
http://weather.gc.ca/warnings/report_e.html?nu25#202440568668939444201702100501ww1676cwnt
Extreme Cold Warning for Coral Harbour region
Temperatures near -42 C (-43.6 F) combined with northwest winds of 15 km/h (9.3 mph) are producing wind chill values around -57 C (-70.6 F) in Coral Harbour this evening.
http://weather.gc.ca/warnings/report_e.html?nu4#121289451764047864201702120501ww1373cwnt
ONTARIO
Snowfall warning for many, many areas (see links)
Snowfall, with total amounts of 15 to 25 cm (5.9″ to 9.8″) is expected.
 
http://weather.gc.ca/warnings/report_e.html?on34#75837044658084746201702110503ww1171cwto (also on27, on26, on44, on43 and on10 in the address link for the other affected areas)
 
 
http://weather.gc.ca/warnings/report_e.html?on10#80242462658084746201702110503ww1171cwto (also on41, on6, on48, on43 and qc68 in the address link for the other affected areas)
QUEBEC
Snowfall warning in effect for many, many areas (see link):
Snowfall, with total amounts of 15 to 20 cm (5.9″ to 7.9″) is expected.
http://weather.gc.ca/warnings/report_e.html?qc44#155531263452710195201702110504ww1070cwul (also qc45, qc43, qc63, qc64, qc52, qc67, qc65, qc58 and qc66 in the address link for the other affected areas)
YUKON
Blizzard warning for South Klondike Highway – Carcross to B.C. bdy region
Total snowfall accumulation of 30 cm (11.8″) or more are expected with wind gusts to 90 km/h (55.9 mph) creating near zero visibility in blowing snow.
http://weather.gc.ca/warnings/report_e.html?yt10#15827030361572579201702110502ww1979cwvr
http://weather.gc.ca/warnings/index_e.html