Barometric Pressure in Delavan, United States 
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The pressure in Delavan, Illinois, United States is predicted to rise over the next few hours, with an average pressure of 992.6 hPa today, which is lower than normal.
Weather prediction: Expect fair, dry, cool weather and a strong breeze
The daily total fluctuation in pressure in Delavan is 12.4 hPa, with a low of 985.1 hPa and a high of 997.5 hPa.
Forecast
Hourly Pressure Trends
Track the barometric pressure in Delavan hour by hour and stay informed about how it will change over the next 6 hours.
The barometric pressure in Delavan, Illinois varies throughout the day. It changes depending on weather systems moving into the area. Pressure drops when a low-pressure system approaches. This brings cloudy and rainy weather. When a high-pressure system arrives, the pressure rises, clearing the skies.
Delavan is situated in the Midwest, surrounded by flat to gently rolling terrain. The city is about 600 feet above sea level. The landscape allows winds to move freely. This leads to rapid changes in atmospheric pressure.
Lake Michigan, about 200 miles to the northeast, has a subtle influence on Delavan's weather. Moist air from the lake can move into the region. This air brings precipitation and changes in barometric pressure. The surrounding landscape and lake's influence work together to shape Delavan's unique weather patterns.