Barometric Pressure Forecast for Cinnaminson, New Jersey
Barometric pressure forecast for Cinnaminson, New Jersey — on the Delaware River in Burlington County, across the water from northeast Philadelphia. See current barometric pressure and what it means for weather-sensitive people.
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Pressure and weather in Cinnaminson
Cinnaminson sits on the flat inner coastal plain where the Delaware widens below Philadelphia, low-lying ground with the Rancocas Creek tidal marshes a short distance downstream. The township sits almost exactly on the mid-Atlantic climatological fault line, and the interesting question here in winter is never whether a storm arrives but what falls out of it. Coastal lows moving up from the Carolinas pass close enough that a shift of fifty miles in the track decides between plain rain, a long spell of sleet and a foot of snow, and the pressure fall is much the same in all three cases. That is worth knowing, because it means the barometric event happens whether or not the weather looks dramatic outside. Summer brings humid Bermuda-high flow and afternoon storms firing along the sea-breeze boundary that pushes inland from the Jersey shore. March and November are the most changeable months.
What this means for you
A rainstorm and a snowstorm on the same track deliver a similar pressure profile, so do not discount a mild wet day when you review your notes. Checking the current barometric pressure rather than the sky is the more reliable guide in this corridor.