Barometric Pressure in Lewistown, United States 
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The pressure in Lewistown, Montana, United States is predicted to drop over the next few hours, with an average pressure of 884.9 hPa today, which is lower than normal.
Weather prediction: Expect wet, unsettled weather and a strong breeze
The daily total fluctuation in pressure in Lewistown is 7.7 hPa, with a low of 881.4 hPa and a high of 889.1 hPa.
Forecast
Hourly Pressure Trends
Track the barometric pressure in Lewistown hour by hour and stay informed about how it will change over the next 6 hours.
Weather patterns in Lewistown make barometric pressure rise and fall. Changes in pressure bring different types of weather. Low pressure often means rain or stormy weather. High pressure means clear skies and fair weather.
Lewistown's high elevation and surrounding mountains affect atmospheric pressure. The landscape makes air move upward, which cools and condenses, changing pressure. This creates unique weather patterns in the area.
In winter, pressure is often low, bringing snow and cold air. In summer, pressure is often high, bringing warm and dry air. Spring and fall have more variable pressure, with changing weather.
Lewistown has a semi-arid climate with low humidity. This means big changes in barometric pressure can bring sudden weather shifts, making the weather feel unpredictable and exciting.