Barometric Pressure
Barometric Pressure in Derwood, United States 
0000 hPa
00.0 ℃
00.0 m/s
00.0%
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The pressure in Derwood, Maryland, United States is predicted to slowly drop over the next few hours, with an average pressure of 997.8 hPa today, which is lower than normal.
Weather prediction: Expect more wet and unsettled conditions
The daily total fluctuation in pressure in Derwood is 3 hPa, with a low of 995.8 hPa and a high of 998.8 hPa.
Forecast
Hourly Pressure Trends
Track the barometric pressure in Derwood hour by hour and stay informed about how it will change over the next 6 hours.
Derwood, Maryland has changing air pressure due to its location near the Atlantic Ocean and mountains. The ocean brings moisture, making air pressure rise, while mountains block or redirect air flows, making pressure drop. In summer, warm air rises, causing low pressure and storms. In winter, cold air sinks, causing high pressure and clear skies. Derwood has a humid subtropical climate, with hot summers and cold winters, causing big pressure changes between seasons.