I think it only goes out 15-16 days so it's at the end of the range and we don't know exactly what lies beyond that. If you look at a meteogram the trend has been for a few days of cool/colder weather, a few days of warmer weather and rinse and repeat. That pattern started last week. For someone who has been touting persistence forecasting (which I don't think is a bad thing), who's to say that warmer period isn't followed by another cooler period after that?