Dharamshala, Oct. 6 -- Several parts of Himachal Pradesh on Sunday witnessed rainfall, while higher reaches received fresh snowfall, including Kullu and Lahaul-Spiti districts. The temperature has also dropped noticeably in the upper regions. According to India Meteorological Department's (IMD) Shimla office, an appreciable fall was observed in the maximum temperatures during the last 24 hours and the average maximum temperatures remained below normal in the state. The Kullu district administration has suspended vehicular traffic to Rohtang Pass and advised commuters not to venture through this highway, officials said. The sprawling Dhauladhar ranges in Kangra district also received the first snowfall of the season and icy winds lashed the adjoining valley areas, signalling the onset of winters, reports reaching here said. The weather office has predicted spells of heavy rainfall to continue on October 6, with rain likely to persist in parts of the state on October 7 as well. MeT department officials said that light to moderate rainfall is likely at most places on October 6 with heavy to very heavy rainfall at isolated places. An orange alert has been sounded in Chamba, Kangra, Kullu and Mandi districts for October 6, with a yellow alert of heavy rainfall in Una, Hamirpur, Sirmaur and Lahaul-Spiti. The IMD has sounded a yellow alert of thunderstorms and lightning in several districts on October 7....