Temperature ranges from 20° C to 37° C. The Rajapalayam climate is semi-arid tropical monsoon type. It has a high mean temperature and a low degree of humidity.

April, May and June are the hottest months of the year. The South West monsoon which sets in June and lasts till August brings scanty rain. The bulk of the rainfall is received during the North East monsoon in the months of October, November and December.

Rajapalayam Weather Forecast
There is no weather monitoring station in Rajapalayam. All the websites which show the weather / temperature for Rajapalayam is from Trivandrum Station. (You have to search for Rajapalaiyam, India)

Current Weather in Rajapaliyam - From Weather.com
Regional Daily Weather Report for Rajapalayam - From India Meterological Department