Barometric Pressure in Helena, United States 
1015 hPa
16.7 ℃
31%
0.86 m/s
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The average pressure in Helena, Montana, United States today is , which is considered normal. Pressure is trending falling.
Weather prediction: Rain at times, worse later
Rapid Pressure Changes
Rapid pressure changes detected in Helena, often a sign of approaching weather shifts. See the forecast chart or get pressure alerts.
- Rapid Fall : ()
- Rapid Rise : ()
- Rapid Fall : ()
- Rapid Fall : ()
- Rapid Rise : ()
The daily total fluctuation in pressure in Helena is , with a low of and a high of .
Forecast
Hourly Pressure Trends
Track the barometric pressure in Helena hour by hour across the next 6 hourly readings.
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.