Some schools in B.C. will be closed Monday due to extreme heat. Here's where Extreme heat blanketing the province of B.C. has forced some school districts, mostly in the Lower Mainland, to cancel classes Monday. Social Sharing CBC News · Posted: Jun 27, 2021 6:07 PM PT | Last Updated: June 28 Schools throughout the Lower Mainland will be closed Monday due to forecast temperatures of, in some cases, more than 40 C. (Evan Mitsui/CBC)