Temperature will b pleasant..bt avoid driving during the night and the morning coz of the dense fog...i was stuck once and lucky enough to narrowly escaped a pile up in the middle of highway..
Rishkesh Haridwar both are at the banks of Ganga so very hot in day and cold at night. We are still waiting for one rain so that will be declaration of winters for us. It is very hot right now. end of Oct it will be breezy at night cold waves but not very hot in day. One light jacket you could manage at night.