hiemal \HAHY-uh-muhl\, adjective:
Of or pertaining to winter; wintry.
Since snow and frost lasted from October well into April, no wonder the mean of my school memories is definitely hiemal.
-- Vladimir Nabokov, Speak, Memory
We took hours to make camp and hours to break camp, and in between tottered like children across the immensity of that bleak and hiemal playground.
-- Beryl Bainbridge, The Birthday Boys
Hiemal is derived from the Sanskrit word hima meaning “cold, frost, snow.”