When Do Dogs Sense Drop In Barometric. Like humans, dogs are affected by changes in barometric pressure—although they probably don't realize what's causing them to feel differently. Scientists have a few different theories as to why dogs are such great weather forecasters.
For example, your dog might experience more pain due to the drop in barometric pressure. A drop in pressure means that conditions may be ripe for a storm to develop. When the barometer drops, and winds die down, indicating a low has moved in, their dogs tend to hold their heads lower to the ground when following a scent.