0000 hPa
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The pressure in Herrin, United States is predicted to rapidly rise over the next few hours, with an average pressure of 1020.2 hPa today, which is considered normal.
Weather prediction: Expect shortly fair weather and gale or storm winds
The daily total fluctuation in pressure in Herrin is 6.9 hPa, with a low of 1016.1 hPa and a high of 1023 hPa. The daily average here is higher than in most cities around the world.
The barometric pressure in Herrin, Illinois averages around 30.12 inches. This is slightly above the national average. It often fluctuates between 29.80 and 30.40 inches.
Herrin is located in southern Illinois. The city is surrounded by rolling hills and thick forests. These geographical features can influence the barometric pressure.
The hills can block or redirect air masses. This can cause pressure systems to stagnate or move slowly. As a result, the barometric pressure in Herrin can remain steady for several days.
The forests also play a role in shaping the local weather. They absorb and release moisture, affecting the humidity and atmospheric pressure. This can lead to sudden changes in the barometric pressure.