What the?
http://www.crh.noaa.gov/wxstory.php?site=dmx
http://www.crh.noaa.gov/wxstory.php?site=dmx
Cool Canadian high pressure will settle into the Midwest this weekend. The result will be high temperatures in the mid 60s to lower 70s and low temperatures dipping into the mid to upper 30s in places across the north Saturday night. A few spots may see some patchy frost across northern Iowa by Sunday morning. The cool weather is expected to stick around into mid next week.