Deer are able to survive harsh weather like rainy conditions because of their natural behaviors and adaptations. They are able to hide under rocky outcroppings or thick shrub vegetation that can shield them from the elements and predators. It is also common for deer to bed down in standing crop fields as long as they can remain hidden and there are no humans or other animals nearby to disturb them.
In addition, deer can rest in the shade of conifer trees that have tightly packed needles and dense foliage that acts as a natural umbrella to keep them dry. They can also find shelter in the nooks and crevices of ridges and overhangs where they can remain protected by raindrops or wind without being exposed to direct sunlight.
Aside from finding a good bedding spot, deer are able to stay warm during the rain by using their thick fur coats that shed water and act as insulation. Additionally, their senses are not as heightened during the rain and they can be more relaxed while bedding down.
It is not uncommon for deer to sleep alone or in small groups during rainy conditions as they can provide safety in numbers and help alert each other of potential threats. They are also able to enter and exit their bedding spots easily by moving to another location to avoid the rain or cold if necessary. Typically, deer will return to their favorite bedding spots that they use throughout the year as they offer protection from the elements and allow them to continue ruminating and resting comfortably.