Barometric Pressure in Chelmsford, United States 
1029.9 hPa
15.3 ℃
45%
3.96 m/s
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The average pressure in Chelmsford, Massachusetts, United States today is , which is higher than normal. Pressure is trending rising.
Weather prediction: Fairly fine, showery later
The daily total fluctuation in pressure in Chelmsford is , with a low of and a high of .
Forecast
Hourly Pressure Trends
Track the barometric pressure in Chelmsford hour by hour across the next 6 hourly readings.
The barometric pressure in Chelmsford plays a crucial role in shaping the city's weather. It varies throughout the year, leading to changes in temperature and precipitation.
Chelmsford is situated in the northeastern United States, where the landscape is characterized by rolling hills and forests. To the east, the city is bordered by the Concord River valley. This unique topography influences the atmospheric pressure, creating microclimates within the city. The valley acts as a channel, directing air masses and affecting the pressure.