Barometric Pressure in Saint Charles, United States 
1024.4 hPa
8.3 ℃
77%
0.67 m/s
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The average pressure in Saint Charles, Iowa, United States today is , which is higher than normal. Pressure is trending falling.
Weather prediction: Rain at times, very unsettled
The daily total fluctuation in pressure in Saint Charles is , with a low of and a high of .
Forecast
Hourly Pressure Trends
Track the barometric pressure in Saint Charles hour by hour across the next 6 hourly readings.
Saint Charles has changing air pressure due to weather patterns. Low pressure brings rain and thunderstorms, while high pressure brings clear skies.
The town's location in a valley affects air pressure. Cold air gets trapped, making winters colder.
In winter, high pressure dominates, bringing cold and clear skies. Summer low pressure brings warm and humid air.
Saint Charles has a humid continental climate. This means big pressure changes happen between seasons, bringing different weather.