Barometric Pressure in Washington, Washington, D.C., US

The pressure in Washington, United States is predicted to slowly rise over the next few hours, with an average pressure of 1014.5 hPa today, which is considered normal.

Weather prediction: Expect more fair, dry, cool weather

The daily total fluctuation in pressure in Washington is 15.7 hPa, with a low of 1007.2 hPa and a high of 1022.9 hPa. The daily average here is higher than in most cities around the world.

Forecast

Washington, D.C.'s weather is affected by its location near the Atlantic Ocean and the Appalachian Mountains. These bodies of water and land create weather patterns that impact air pressure.

The city's coastal location means it gets hit with oceanic air masses, which bring high air pressure and fair weather. When these air masses meet the Appalachian Mountains, they force air to rise, creating low air pressure and rain.

In the summer, high air pressure dominates, bringing hot and humid weather. In the winter, low air pressure is common, resulting in cold and snowy conditions.

Washington, D.C. has a humid subtropical climate, characterized by hot summers and mild winters. This climate type means the city experiences significant pressure changes between seasons, leading to varying weather patterns.