Bangladesh has a sub tropical monsoon climate. There are six seasons in a year; Winter (Dec-Jan), spring (Feb-Mar), Summer (Apr-May), Monsoon (June-July), Autumn (Aug-Sep) and Late Autumn (Oct-Nov). The average temperature across the country usually ranges between 9 C - 29 C in winter months and between 21 C - 34 C during summer months. Annual rainfall varies from 160 cm to 200 cm in the west, 200 cm to 400 cm in the south-east and 250 cm to 400 cm in the north-east. Cyclones above category three/four are uncommon (especially in the deep winter January through March)-- but while rare, can still bring widespread disruption as expected to infrastructure and power outages, especially in the coastal areas. The weather pattern is akin to the Gulf Coast in the United States (Alabama, Mississippi and Louisiana).
The current weather can be seen by hitting the 'play' button on the following interactive map, Current Bangladesh Satellite Weather Radar