Midweek rain ahead of a late week warmup

Much of the area enjoyed highs in the upper 60s/lower 70s yesterday (an official high of 69 degrees at O'Hare 3 degrees above normal). Today similar conditions expected with forecasted highs in the mid to upper 60s. I'm forecasting for a high of 67. Our normal for this time of year is 66 degrees. However, there is rain with isolated thundestorms on the way. The rain should make its way here sometime early this afternoon from south to north lasting through early Wednesday. Heaviest rainfall should be just south of the city where there is a greater amount of moisture in the atmosphere. The heaviest shoudld fall between 6pm CDT thru mindnight tonight. With a weak cold front to advance, temperatures are not expected to fall much. In fact Wednesday we should see highs around normal. A ridge out west will follow surging temperatures into the 70s. Friday we should see the warmest weather in October with temperatures in the mid 70s (10 degrees above normal).