Barometric Pressure in Grand Blanc, United States 
0000 hPa
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The pressure in Grand Blanc, Michigan, United States is predicted to rapidly rise over the next few hours, with an average pressure of 981.5 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 Grand Blanc is 15.7 hPa, with a low of 975.4 hPa and a high of 991.1 hPa.
Forecast
Hourly Pressure Trends
Track the barometric pressure in Grand Blanc hour by hour and stay informed about how it will change over the next 6 hours.
The barometric pressure in Grand Blanc, Michigan varies throughout the day. It changes depending on the weather systems that pass through the region.
Grand Blanc is located in the eastern part of the Saginaw Street Valley. This valley runs southwest to northeast through the Flint metropolitan area. The surrounding terrain is generally flat.
The flat landscape allows winds to move freely through the region. This leads to rapid changes in atmospheric pressure. Weather systems can quickly move into and out of the area.
Cold air masses from Canada can move quickly into the region. This brings cold temperatures and lower pressure. Warm air from the Gulf of Mexico can also move into the area. This brings warmer temperatures and higher pressure.