Dont use your built in phone app for forecasts. Dont expect hour by hour precision (maybe for the next few hours sure, but not 2,3,4,5 days out). Trust nobody expect the trained professionals at NWS. These people look at ALL the models, they watch things like a hawk. I work with some of these nerds and it's crazy. They are like 'oh jimbob did you see the latest GFS kicking out the low up into canada? oh yeah doug that is crazy, but the euro says blah blah and NAM says blahblah... Their job is to literally make a forecast, for the same area, every day. Some people do it for years and years! Think of the experience, wisdom, little tricks and tips etc. Just go to weather.gov, look at it for 2 minutes. Read the foreacst discussion if you want to get your details.