Barometric Pressure in Longmont, United States 
999.8 hPa
18.4 ℃
37%
1.87 m/s
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The average pressure in Longmont, Colorado, United States today is , which is lower than normal. Pressure is trending steady.
Weather prediction: Rather unsettled clearing later
Rapid Pressure Changes
Rapid pressure changes detected in Longmont, often a sign of approaching weather shifts. See the forecast chart or get pressure alerts.
- Rapid Rise : ()
- Rapid Fall : ()
- Rapid Rise : ()
- Rapid Rise : ()
- Rapid Rise : ()
The daily total fluctuation in pressure in Longmont is , with a low of and a high of .
Forecast
Hourly Pressure Trends
Track the barometric pressure in Longmont hour by hour across the next 6 hourly readings.
The barometric pressure in Longmont, Colorado, changes constantly. It is affected by weather systems moving into the area. These systems can bring high or low pressure.
Longmont is situated in a valley near the Rocky Mountains. The mountains to the west influence the weather in the city. Moist air from the west moves into the valley.
This air is pushed upwards by the mountains, causing it to cool and condense. This process leads to precipitation in the form of rain or snow. The surrounding terrain also creates channels for winds to move through.