Weather is hot now a days but my friends were there yesterday and temperature at resort was 15-16 in night so its quite a change if you want to escape scorching heat.
One day is not enough for Gorakh hills. You need to stay one night there.. Also it is advisable to hire jeep from Juhi instead of Wahi Pandhi because Juhi to Wahipandhi road is in bad condition for ur car.
Furthermore if you are planning for 1st May weekends then let me tell u that all rooms are already booked and halls also.. u might get accommodation in tents.. contact Jumman Jamali for pre-reservation.