As south winds flowing up the back side of blocking high pressure along the east coast bring unseasonable warmth to the mid sections of the country, cold air wrapping around a deep low pressure pattern unleashes heavy snows over portions of the the Rockies. Six to 12-inch snows are forecast for Glacier Park in NW Montana and high elevations of western Wyoming today. July-like heat and humidity will build over northeast Illinois this weekend with Saturday’s Wrigley Field game time temperatures for the Cub-Diamondback playoff only some 5° lower than the 90° readings experienced by those baseball clubs in Phoenix Wednesday and Thursday. Sunday’s 30th running of the LaSalle Bank Chicago Marathon may be the warmest ever with 8 a.m. CDT starting time temperatures forecast to be 5° above the normal high temperature for that date. Significant cooling is not expected before next Tuesday.
--By Paul Dailey, WGN Weather Center Meteorologist
WGN-TV Chief Meteorologist Tom Skilling and the WGN Weather Center staff provide daily coverage of weather in the Chicago area.
