WOAY-TV (Oak Hill, WV): A Canadian airmass will bring cooler temperatures into the region, but don't get used to it! Chief Meteorologist Chad Merrill has the latest: https://www.youtube.com/watch?v=bkTlyrpDe_M TEMPERATURE TRENDS: Temperatures will continue to slowly cool through Thursday and then warm significantly by early next week. The coolest morning will be Friday with low 40s