... shhh, don't tell ! I recently ran across this functionality on Accuweather, after doing a google search for something or other:
If you click on the about button, you essentially get a zero explanation. Monitoring it for several days, it seems to prioritize sunniness, then temperature, then who knows? Prioritizing sunniness would mean they assume that most homes have a great solar orientation, especially for the rooms used the most in daylight hours, for which as far as I know there is no data:
Perhaps this breakthrough in weather forecasting(certainly more important to saving energy and the climate than 'golf weather') can be useful to building designers and smart thermostat designers?