As most of Tamil Nadu waits with bated breath, easterly winds are expected to start blowing across the state today. This marks the beginning of the North East monsoon onset, which is a major period of rainfall activity over the peninsula. Numerical models indicate rainfall to commence today over coastal TN along with a gradual fall in daytime temperatures in the coming days. Meanwhile South west monsoon is expected to withdraw completely by today or tomorrrow. City Outlook: Chennai – Sunny with a high of about 32 degrees and a low of about 29 degrees. Possibility of an isolated shower exists. Vellore – Light rains with a high of about 32 degrees and a low of about 23 degrees. Madurai – Some clouds with a high of about 33 degrees. Chance of heavy thunderstorms in the evening. Trichy – Partly cloudy with a high of about 34 degrees and a low of about 25 degrees. Coimbatore – Mostly sunny with a high of about 30 degrees and a low of about 22 degrees.