According to IMD, Mumbai and districts of Thane and Palghar may experience partly cloudy skies with one or two spells of rain and thundershowers from Thursday, October 29. The post-monsoon spell. Cyclone Arnab To Bring Light Showers In Mumbai, Thane And Palghar - Cyclone Arnab developed into a depression by4. It made a landfall over the Andhra Pradesh coast early on8.