valley wind
A wind that blows up a valley during the day as the valley floor warms. Technical meteorological term; not an everyday word.
A valley wind is a wind that blows up a valley during the daytime.
mountain-valley winds; mountain and valley breeze
Compound of 谷 (tani, 'valley') and 風 (kaze, 'wind'). The reading たにかぜ is a straightforward kun'yomi combination.