While barometric pressure remains relatively consistent in a climate, many factors can influence fluctuations related to local weather patterns. These weather patterns create pressure ridges of air that impact the barometric pressure. Numerous factors can impact barometric pressure, but it is ultimately determined by the temperature and the movement of the atmosphere. These two factors can cause both high and low pressure. While high pressure usually creates weather conditions that are clear, dry, and calm, low pressure gives you those days that are undeniably miserable – cloudy, windy, and wet. As a general rule of thumb, air tends to travel from areas of high pressure to areas of low pressure, which can intensify the weather conditions I mentioned above. The lower the barometric pressure is in a given area, the closer to the surface the bad weather will fall – and the worse the weather will get where you are, too. What Are The Normal Ranges Of Barometric Pressure? As I mentioned a moment ago, the biggest predictor of barometric pressure will be the local environment. If you live at a high altitude, your barometric pressure will likely be lower. However, there are also “normal” ranges that you might experience and can reference to determine whether it is a high or low-pressure day. A baseline pressure that can be used is about 29-30 inHg (inches Mercury). Again, this depends on your elevation – so you will want to keep track of your local weather patterns to determine the baseline conditions in your area. As a storm system moves into your area, those readings are going to change. Right in the middle of a
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