from 1970s only the meteorological record available in meteorological department.

You can check CHELSA website or MIRADOR from NASA, both are global data.

Sneha, you may search here https://www.esrl.noaa.gov/psd/data/gridded/tables/precipitation.html

Thank You Sir..

Dear Sneha,

You can find the satellite rainfall data from link below:

https://disc.gsfc.nasa.gov/mirador-guide

( if your study area in in tropical), one form of rainfall data is TRMM (Tropical Rainfall Measurement Mission) which is satellite completes database which operated more than a decade which provide the whole-world with large volume of rainfall data for the validation of atmosphere and climate models.

I hope this can help,

Thank,

Water portal of India