Chicago weather: Chilly start to the week, major warmup ahead

Below-average temperatures will continue in Chicago through Wednesday before a major warmup.  

There will be a few clouds out this morning, but skies will become nearly totally sunny. Despite this, highs will only manage the low to mid-70s.  

Tonight will be quite cool, with most areas in the 50s and the warmest downtown. A few of the usual cold spots could see the upper 40s.  

The rest of the week looks quiet with a warming trend reaching a crescendo over the weekend. Highs won't be far from 90 on Saturday and in the low 90s on Sunday and Monday.

Ernesto is still a hurricane with 80 mph winds passing very close to southeast Newfoundland.