ПЕРЕВЕДИТЕ ПОЖАЛУЙСТА!!!:I often hear on TV weather forecast and very surprising

ПЕРЕВЕДИТЕ ПОЖАЛУЙСТА!!!:
I often hear on TV weather forecast and very surprising that meteorologists always predict it correctly. I do not understand how they do it and decided to ask my mother. turns out they have a special thing that predicts them. and then I decided to try himself as a meteorologist and predict weather for tomorrow. I think that tomorrow will be cold, but may be we will swimming in the morning sun. Spring is different. I do not think that will be so because the special things, about which I said before, I do not have.