Barometric Pressure in Portsmouth, New Hampshire, US

The pressure in Portsmouth, United States is predicted to drop over the next few hours, with an average pressure of 1023 hPa today, which is considered normal.

Weather prediction: Expect wet, unsettled weather and a strong breeze

The daily total fluctuation in pressure in Portsmouth is 6.7 hPa, with a low of 1019.2 hPa and a high of 1025.9 hPa. The daily average here is higher than in most cities around the world.

Forecast

• Low Pressure
• Normal Range
• High Pressure

The barometric pressure in Portsmouth fluctuates throughout the year. Changes in pressure bring different weather patterns. Low pressure systems lead to cloudy and rainy days. High pressure systems result in clear skies and fair weather.

Portsmouth is situated near the Atlantic Ocean and the Great Bay Estuary. The surrounding water bodies influence the local climate. The city is also bordered by rolling hills to the northwest. These geographic features disrupt airflow patterns, affecting barometric pressure. The combination of ocean and land breezes shape the local weather.

Winters in Portsmouth are cold and snowy. Frigid air from Canada moves southward, bringing chilly temperatures. Spring arrives slowly, with mild air from the ocean. Summers are warm and humid, with occasional heatwaves. Autumns are mild, with gentle breezes from the northwest.

Disclaimer

* The barometric pressure information for Portsmouth, New Hampshire, United States on this page is for educational purposes only. We are not responsible for its accuracy or reliability. This information is not medical advice. Consult a health professional for medical concerns and do not rely on this site for medical decisions.