Hey, tell you what ? I want to come with you on this one.
There are direct trains and buses but no direct flights for this journey. New Delhi (Delhi) to Haridwar (Uttarakhand) distance is 209 km and you can get there by train in just over 4 hours and 5 minutes with fares starting from ₹ 90.
The temperatures at this time of the day are in a comfortable range.