In this study, based on the analysis of historical data on temperature and rainfall recorded at 34 meteorological stations, It is reveal Climate change and variability in Bangladesh from 1989-2019. Analysis of rainfall data showed that for most stations, the total rainfall showed an increasing trend for the monsoon and post-monsoon seasons. The average increase in monthly average maximum and minimum temperatures during the 31 years from 1989 to 2019 is quite significant. These changes will threaten Bangladesh's significant achievements over the last 31 years in increasing incomes and reducing poverty. Analysis of rainfall data showed a rising rainfall trend for most stations during the monsoon and post-monsoon seasons. Analysis of rainfall data showed that rain increased during and after the monsoon but decreased during the winter. Assessment of changes in maximum temperature, minimum temperature, and rainfall patterns. Bangladesh's annual maximum temperature was increasing on average by 34 stations. The greatest change in month-average maximum temperature was found in the Southeastern region of Bangladesh for maximum months.