As for Tamil Nadu, light to moderate rain is likely in a few places and in Puducherry and Karaikal areas today (January 11).

The depression over the southwest Bay of Bengal crossed the Sri Lanka coast near Mullaitivu. It then weakened into a low-pressure area over southern Tamil Nadu and the Gulf of Mannar.

Now a cyclonic circulation, it'll bring light rain today. Heavy showers are likely in Chengalpattu, Villupuram, and Nilgiris. Heavy rain in 7 districts is expected tomorrow.

Light rain might occur on Jan 14, the day before Pongal. But the weather is expected to be dry from Pongal day (Jan 15) through Jan 17, says the weather center.

Chennai will be cloudy today and tomorrow with light rain. Temps will be around 22-25°C. The city saw unusual cold today, but it's unclear if it will last.