You can expect temperatures up to -20 degrees to -25 degrees. This temperature
is in the higher altitudes after Dingboche and Lobuche towards EBC and
Gorakshep. The average weather during the trek would be -5 degrees. The
weather also depends on the month you are accomplishing the trek. The above
temperatures are from March – June. You can expect lower temperatures when
there are snow storms or during winters in months like November and
December.
So it is imperative to come prepared for the lower temperatures with
appropriate gear like Down jackets, gloves . woolen socks, thermal caps etc .