Generally, if the BBC Android app for weather forecasting is a yardstick for the progress made in the art/science then we haven't come on that far in the last 50 years. The app changes its little data recommendations upto half a dozen times during the actual day. It occasionally manages to be wrong even in settled weather. As to actually forecasting the weather from several days previous [ie, what you want it for so that you can plan], it is often laughably inaccurate. This is, of course, for Southampton. I can't speak for the accuracy outside the area. Those at Weather Centre still cannot seem to work out that the Test Valley is a microclimate and has hugely different weather to the surrounding districts of the South. As nobody has a forecasting app that is any better, I don't change it though. And it is a minor entertainment.