Light rains occurred at isolated places in Jaipur Bharatpur and Kota divisions, the Met Department said.
Alwar recorded 7 mm rain and Ramgarh and Sangod 2 mm.
The monsoon is expected to hit the state between June 22 and June 26 if weather conditions remain favourable.
Meanwhile, Churu was the hottest place in the state recording maximum temperature of 45.3 degrees Celsius followed by Sriganganagar 44.6 degrees.
Elsewhere day temperatures raised between 40.4 to 43.3 degrees Celsius.
The Met department has forecast dust and thunderstorm accompanied by squall at isolated areas in the state during the next 24 hours.