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Barometric Pressure in Chelmsford, Massachusetts, US


0000 hPa
00.00 inHg


00.0 ℃
0.00 ℉


00.0 m/s
00.0 mph


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The pressure in Chelmsford, United States United States is predicted to rise over the next few hours, with an average pressure of 1015.5 hPa today, which is considered normal.


Weather prediction: Expect fair, dry, cool weather and a strong breeze

The daily total fluctuation in pressure in Chelmsford is 6 hPa, with a low of 1011.6 hPa and a high of 1017.6 hPa. The daily average here is higher than in most cities around the world.



Chelmsford's average barometric pressure is 30.12 inches of mercury. This is slightly higher than the national average.

Barometric pressure

The pressure is higher during the winter months, around 30.25 inches. It drops to 30 inches in the summer.

Chelmsford is situated in a valley. The Merrimack River flows nearby. The surrounding hills and mountains affect the air pressure.

The hills block cold air from the north. Warm air from the Atlantic Ocean reaches the area more easily. This mix of air masses influences the pressure.

The landscape also creates a microclimate. The valley traps warm air, making summers feel hotter. Cooler air settles in the valley, making winters feel colder.

This unique layout affects the atmospheric pressure. The pressure changes are not drastic, but noticeable.


* The barometric pressure information for Chelmsford, Massachusetts, 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.