jeri muoio good morning l through the day, a mix of clouds. that will thin out. chilly this morning. a mild afternoon. formal high of 52. later on today, boss around 58. tomorrow more sunshine. much cooler tomorrow. high temps tomorrow only in the upper 40s. much the same on wednesday. our next storm looks like some rain thursday evening. and that lingers up until about mid-day on friday. let's take a look at what's . >> and that's your latest weather. matt? >> thanks very much. one of the chilling aspects of the paris attacks. there was no chatter pointing to them ahead of time. coming up, the apps, even a video game system, that may have helped the terrorists stay below the radar. savannah? >> yes. from here in paris, we'll also talk about the powerful reach of radical groups like isis, their ability to attract young followers. why is that happening? we'll talk to a man who was once drawn in himself and is now fighting extremism but first, this is today on nbc. jeb bush: leadership means you've got to be all in. it's not about yappin'. it's not about talking. i