I agree with previous answers. Simply put the ultimate goal of weather forecasting is to protect human lives and property, improve health, safety, and economic prosperity. The weather has a strong influence on almost every area of our lives, so of course it is important! But thanks god with modern weather forecasting websites, you can check Doha winter temperature, New York summer weather, next day weather and so on.
Because it could affect us in many ways because if we didnt know we would have been in the freezing ocean in a blizzard and we didnt know that there was a nor easter
For people like pilots and farmers hazardous weather is bad. Also road maintenance is an issue so there are no blockages.Not knowing what the weather will be like, e.g people will not go to the beach on rainy days or spend money on ice cream or beach stores