what does very cold weather do
Blood pressure generally is higher in the winter and lower in the summer. That's because low temperatures cause your blood vessels to narrow â which increases blood pressure because more pressure is needed to force blood through your narrowed veins and arteries.In addition to cold weather, blood pressure may also be affected by a sudden change in weather patterns, such as a weather front or a storm. Your body â and blood vessels â may react to abrupt changes in humidity, atmospheric ...