Barometric Pressure in Helena, United States 
0000 hPa
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The pressure in Helena, Montana, United States is predicted to drop over the next few hours, with an average pressure of 869.1 hPa today, which is lower than normal.
Weather prediction: Expect wet, unsettled weather and a strong breeze
The daily total fluctuation in pressure in Helena is 6.3 hPa, with a low of 865.7 hPa and a high of 872 hPa.
Forecast
Hourly Pressure Trends
Track the barometric pressure in Helena hour by hour and stay informed about how it will change over the next 6 hours.
The barometric pressure in Helena, Montana is influenced by its location in the northwestern United States. It fluctuates throughout the year due to changing weather patterns.
The pressure can drop significantly during storms. This brings rain and snow to the area.
The city is situated in a valley surrounded by mountains. These mountains block or redirect air masses. They also force warm air to rise, cool, and condense. This leads to precipitation.
The nearby Continental Divide affects the flow of air. It splits the prevailing westerly winds, creating different weather patterns.