| Jan. 1942 | The Central Meteorological Observatory Research Division was established. | |
| Oct. 1945 | The Central Meteorological Observatory Research Division was moved to Koenji (Mabashi), Suginami, Tokyo. | |
| Apr. 1947 | The Meteorological Research Institute was reorganized into two Administrative Divisions and 10 Research Laboratories. | |
| June 1949 | Reorganized and associated with the Central Meteorological Observatory. | |
| June 1956 | Reorganized and associated with the Japan Meteorological Agency, with one Administrative Department and 9 Research Divisions with 23 Research Laboratories. | |
| May 1972 | Enlarged into one Office of Planning, two Adminstrative Divisions and 9 Research Divisions with 26 Laboratories. | |
| Apr. 1977 | Expanded to 27 Laboratories. | |
| June 1980 | The entire Institute was moved to Tsukuba Science City. | |
| May 1987 | The Climate Research and the Meteorological Satellite and Observation System Research Divisions were established. | |
| Apr. 1997 | The Atmospheric Environment and Applied Meteorology Research Department was established | |