Barometric Pressure in Sullivan, United States 
0000 hPa
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The pressure in Sullivan, Indiana, United States is predicted to rapidly rise over the next few hours, with an average pressure of 997.1 hPa today, which is lower than normal.
Weather prediction: Expect shortly fair weather and gale or storm winds
The daily total fluctuation in pressure in Sullivan is 10.9 hPa, with a low of 990.7 hPa and a high of 1001.6 hPa.
Forecast
Hourly Pressure Trends
Track the barometric pressure in Sullivan hour by hour and stay informed about how it will change over the next 6 hours.
The barometric pressure in Sullivan, Indiana is constantly changing. It rises and falls throughout the day. This change affects the weather patterns in the area. Shifts in pressure bring different types of weather.
Sullivan is situated in a valley surrounded by rolling hills. The landscape plays a significant role in shaping the atmospheric pressure. The hills block and redirect wind patterns. This, in turn, alters the pressure. The valley also traps cold air, leading to colder temperatures in winter.
The surrounding landscape also influences the precipitation in Sullivan. Moist air from nearby Lake Michigan moves over the hills. As it rises, it cools, and the water vapor condenses, resulting in precipitation. This leads to increased rainfall and snowfall in the area.