Multiple updates cite the latest Indian Meteorological Department (IMD) guidance for Mumbai rains. The reports indicate that rain chances increase significantly as the day progresses, reaching near-certain levels by night. One update states that the probability of precipitation by night is around 100%. The information is presented as a day-specific forecast, encouraging residents to check IMD updates for changes as conditions evolve. No additional details on rainfall intensity, storm duration, or specific locations within Mumbai are included in the provided excerpts. Overall, the cited IMD figures point to the highest likelihood of rainfall occurring at night, with the main takeaway being that precipitation is expected to be very likely during the evening hours. The coverage remains focused on the probability of rain rather than broader impacts or advisory recommendations.