After trying tones of codes for ARIMA model parameter estimation and prediction, I found this code could be the best one that fit my purpose of predicting temperature. I would like to share it to you. Thanks

tscodes
.......\arimasim.m
.......\armasim.m
.......\c.m
.......\finda.m
.......\findaj.m
.......\fitarima.m
.......\fitarma.m
.......\invdiff.m
.......\lm.m
.......\sunspotdata
.......\pacf.m
.......\pgram.m
.......\r.m
.......\spec.m
.......\sunspots.m

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