This was disclosed by the Saudi Civil Defence Department on Monday.
According to the department, eleven others were also wounded as a result of the rains and flooding.
The casualties occurred in Hafar al-Batin province since the torrential rains began on Friday until Sunday night, a civil defence spokesman in the eastern region was quoted as saying by official news agency SPA.
The spokesman added that sixteen people were evacuated, seven were sheltered, forty vehicles and three houses were damaged.
Reports received by the civil defence also say a number of people and one vehicle were trapped due to the rains.