They're outdated!
Seriously, Dave recorded tonight's videos several hours ago, but the forecast for Chicago on Monday is already outdated. The video shows a high of 55, but the official TWC forecast has already been changed to a high of 62, with many local affiliates already predicting even higher. Even so, the weather.com video won't be updated until at least 5 AM tomorrow. Perhaps they need more OCMs to work later at night on these videos so they won't get outdated like this?