Barometric Pressure in Duncannon, United States 
0000 hPa
00.0 ℃
00.0%
00.0 m/s
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The pressure in Duncannon, Pennsylvania, United States is predicted falling over the next 24 hours, with an average pressure of today, which is lower than normal.
Weather prediction: Rain at times, very unsettled
Rapid Pressure Changes
Rapid pressure changes detected in Duncannon - often a sign of approaching weather shifts. Get accurate local time and alerts on our iOS app.
- Rapid Rise - ()
The daily total fluctuation in pressure in Duncannon is , with a low of and a high of .
Forecast
Hourly Pressure Trends
Track the barometric pressure in Duncannon hour by hour and stay informed about how it will change over the next 6 hours.
Duncannon has varying air pressure due to changing weather. Low pressure brings rain and clouds, while high pressure brings clear skies and calm.
Surrounded by mountains and the Susquehanna River, Duncannon's geography affects air pressure. The mountains block or push air masses, changing pressure.
In winter, cold air brings high pressure, making it crisp and cold. In summer, warm air brings low pressure, making it hot and humid.
Duncannon has a humid continental climate. This brings big changes in air pressure and weather throughout the year.