Light to moderate rain and thunder showers accompanied by temporary gusty wind is likely to continue in all the divisions except one or two places in Rangpur, the Met Office said on Monday.
"The rain occurred due to the depression formed in the Bay of Bengal. However, the rainy weather may stop after two to three days," said Meteorologist Abul Kalam Mallick, meteorologist of the Bangladesh Meteorological Department (BMD).
Many places of Dhaka, Khulna, Barishal, Chattogram, Sylhet, Rajshahi, and Mymensingh divisions may experience moderately heavy to heavy falls, according to the BMD website.
BMD meteorologists said that today's rain was not unusual. "Currently, monsoon is less active over Bangladesh and moderate over North Bay," according to the meteorologist.
On Monday, Bangladesh Meteorological Department (BMD) recorded 54mm rain in Dhaka, 22mm in Feni and 1mm at Maijdee, Noakhali from morning till noon.
The depression over the Bay is likely to intensify further and moved in a west or north-westerly direction, according to the Meteorological Department.
The depression was centred at 6am today about 1089km southwest of Chattogram port, 046km southwest of Cox's Bazar port, 941km southwest of Mongla port and 951 km southwest of payra port.
Maritime ports of Chattogram, Cox's Bazar, Mongla and Payra have been advised to keep hoist distant cautionary signal number one.