I usually open up my weather app on my iPhone to get a sense of what to expect for the day or what the current temperature is. In addition to this, I almost always open up accuWeather to get a detailed report of what to expect for the day. AccuWeather will let know how long it will rain/snow for. It also sends me notifications when there is a weather advisory reported, such as the storm we just had last week. I like to use this app because it is easy and has always been reliable.