The phrase "a harsh cold" is correct and usable in written English.
It can be used to describe an intense or severe cold temperature or weather condition.
Example: "As winter approached, the region was hit by a harsh cold that made it difficult to go outside without proper clothing."
Alternatives: "bitter cold" or "severe cold".
The instruments in the string ensemble were played with mutes and without vibrato, producing a harsh cold sound.
A place of quaint warmth and beauty, and at the same time a harsh, cold and vicious jungle.
Traveling across a harsh, cold, snow-covered terrain filled with wild packs of dogs, Willo heads into the city, a bleak realm of starvation and violence.
Some of the most intense jet lag I've ever experienced came from flying in February from New Hampshire to Florida, even though they're both in the same time zone -- from being in a harsh, cold, puritanical environment in the morning, to a lush, warm, hedonistic one in the afternoon.
A harsh cold had settled over the Panhandle.
However, next to nothing is known about gene expression in arctic plants, which are actually adapted to a harsh, cold environment.
If you live in a place with harsh, cold winters you may need to wait until late spring to plant your switchgrass.
The Missouri's drainage basin has highly variable weather and rainfall patterns, Overall, the watershed is defined by a Continental climate with warm, wet summers and harsh, cold winters.
The particular combination of these parameters helps to design a winter house with thermal comfort for that particular harsh cold climate region.
The group congratulated the couple, presented them with a gift of honorary beads, and followed them in a celebratory caravan -- mostly in cars, given the harsh cold -- from the church to the reception.
The Garfield Park Conservatory on Chicago's West Side, shown here, provides a breath of spring for Fountain and others during the harsh cold of winter.
