The deceased was identified as Shubhankar Barman, a Class 1 student of Shishu Niketan School in Dhubri's Bilasipara locality, official sources said.
Locals claimed that Barman passed away on the spot. However, Barman was rushed to a nearby hospital, where doctors declared him dead.
Meanwhile, Barman's mother sustained severe injuries and was admitted to Bongaigaon Civil Hospital for treatment.
According to an official, Dhubri district recorded heavy rain till Wednesday morning.
Earlier on Tuesday, a student from Morigaon district lost his life when a large tree fell on the tempo while he was traveling to school.
The victim was identified as Kaushik Amphi from the Dhupguri area of the district.
Several districts in Assam shut down schools, colleges, and other educational institutions on Wednesday as the weather department predicted heavy rain and storms in the state.