Assam, West Bengal, Odisha might be in for Heavy Rainfall between May 4 and 7: Weather Forecast Isolated heavy rainfall is possible over Assam and Meghalaya on May 4, 5, and 7. Scattered rains and thundershowers are expected over the eastern states during the next four days | 4 May 2021 12:32 PM GMT New Delhi: This week, some of the parts of East and Northeast India could be in for heavy rainfall forecast across six states within the region between May 4 and 7. India Meteorological Department (IMD) states that a cyclonic circulation lies over West Uttar Pradesh and neighbourhood as of Tuesday morning (May 4), and a trough runs from this circulation to Assam at lower levels.