This forecast comes with a model error of plus or minus 5%.
Sunday's maximum temperature settled at 36 degrees Celsius, one notch above the season's average, while the minimum temperature was recorded at 20.5 degrees Celsius, normal for the season.
The IMD defines average, or normal, rainfall as between 96 per cent and 104 per cent of a 50-year average of 89 centimetres for the entire four-month season beginning June.
A normal monsoon will not only aid agriculture growth but could have a positive impact on the overall rural economy.
The forecaster also said that there is nil possibility of a big nationwide drought or deficient rainfall when the total cumulative seasonal rainfall across the country falls below 90 per cent of LPA.
The IMD, meanwhile, said it would be able to forecast a clearer picture of the Monsoon, which normally extends from June 1 to September 30, only in June.
Normal rains in last two years helped a rebound in farm growth rate to 6.8% in 2016-17 and an estimated 3% in 2017-18.
The onset of the monsoon in June kick-starts planting of rain-fed Kharif crops.
Why good rain is vital for Indian economy and what is its significance in the current political landscape? Anything between 90-96 per cent of the LPA is considered "below normal". The IMD categorises rainfall in the 96 per cent to 104 per cent LPA range as normal while the rain immediately below that, it is considered below normal. The country receives some 70 per cent of its annual rainfall during the four-month Monsoon season.