Today (06.12.2021)
Thunderstorm with light to moderate rain is likely to occur at a few places over western Ghats districts & adjoining interior districts (Tiruppur, Erode, Salem, Namakkal, Karur & Dharmapuri) and south Tamilnadu.
Mainly dry weather likely to prevail over rest Tamilnadu, Puducherry and Karaikal.

Tomorrow (07.12.2021)
Light to moderate rain is likely to occur at a few places over south coastal Tamilnadu.
Mainly dry weather likely to prevail over rest Tamilnadu, Puducherry and Karaikal.

THUNDERSTORM WARNING:
Today (06.12.2021) Thunderstorm with lightning is likely to occur at isolated places over Tamil Nadu.

LOCAL FORECAST FOR CHENNAI CITY AND NEIGHBOURHOOD:
For next 24 HRS:: Sky condition is likely to be partly cloudy. Maximum and minimum temperature is likely to be around 32˚C and 24 ˚C respectively.

Reference:
http://imdchennai.gov.in/tn_fc.pdf
http://www.imdchennai.gov.in/hrw_district.htm