The temperatures quoted are for pre-monsoon ascents, April to mid June. Post-monsoon (September to November) temperatures are likely to be a little lower and will fall further in December with the onset of Himalayan winter.
Wind chill rating: Medium
Support is often provided to Base Camp, but you will be carrying your own gear higher up.
Looking for a guided trip with an experienced company? We recommend KE Adventure Travel's Mera Peak Climb.