Northern India has faced record-breaking rainfall in September 2025. Dehradun received 264 mm in 24 hours, while Himachal Pradesh saw 141 mm. Scientists link the unusual intensity to western disturbances, Bay of Bengal winds, rising temperatures, and climate change.

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• Dehradun flooded, 264 mm rain in one day
• Himachal Pradesh got 141 mm rainfall same period
• IMD denies cloudburst, calls it extreme rainfall
• Western disturbances continue unusually till September
• Climate change delaying retreat of weather systems
• Rainfall fewer days but much heavier intensity
• Floods, landslides, debris flows worsening disasters
• Bay of Bengal winds colliding with Himalayas
• Rising heat makes air hold more moisture
• High-altitude zones shifting from snow to rain