Time series is according to the order of time interval variables and formation of random variables sequence. Time series
analysis is estimated and research at a certain time sequence in the long-term changes existing in the process of statistical
regularity [8]. The ARMA model is a kind of common random time-series model, founded by Box and Jenkins, it is also
called the B-J method. In recent years at home and abroad the method is widely applied in weather forecasting, due to its
advantages and simple application according to theory [9,10].