In Lesotho temperatures are scorching (3)
I believe the answer is:
hot
'scorching' is the definition.
('hot' can be similar in meaning to 'scorching')
'in lesotho temperatures are' is the wordplay.
'in' indicates the answer is hidden within the clue.
'HOT' is hidden within 'lesotho temperatures are'.
(Other definitions for hot that I've seen before include "recently stolen" , "Very popular" , "SECOND PART OF 11" , "Spicy or very warm" , "Under the collar, it means anger" .)