WGN's Tom Skilling is optimistic about seeing Sunday night's eclipse:
While the first vestiges of Sunday evening’s full moon will begin at 7:40pm, the partial eclipse stage is to be reached at 8:07 pm Chicago time moving toward the “total eclipse” phase at 9:11pm. The disc of the moon will take on a dim rusty-red cast in the total eclipse phase for 1 hour and 12 minutes (through 10:23pm Sunday evening). The partial eclipse phase is to be reached at 11:27 pm and the eclipse ends at 11:55 pm.
The early read is that the weather is going to cooperate in viewing the event from Chicago and the Midwest. Here, from the National Weather Service’s GFS forecast model is a forecast of the likely location of cloud cover at differing heights–and, finally, a composite of potential total cloud cover at 7pm CDT Sunday.
Here is the GFS model’s total cloud cover prediction. Sunday is likely to be an unseasonably mild late September day with brisk southerly winds likely to boost daytime temps across the VChicago area to around 80-degrees and to limit nighttime lows to the 60s.
Here's hoping. It should be an epic eclipse.