Barometric Pressure in Palmyra, United States 
1017.7 hPa
5.4 ℃
78%
2.26 m/s
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The average pressure in Palmyra, Pennsylvania, United States today is , which is considered normal. Pressure is trending falling.
Weather prediction: Rain at frequent intervals
The daily total fluctuation in pressure in Palmyra is , with a low of and a high of .
Forecast
Hourly Pressure Trends
Track the barometric pressure in Palmyra hour by hour across the next 6 hourly readings.
Palmyra sits in Lebanon Valley, between Appalachian ridges and inland from the Atlantic. Weather systems often travel west to east, so passing fronts bring quick shifts in wind, clouds, and pressure. Falling pressure often comes before rain or snow. Rising pressure commonly follows storms, bringing calmer, drier conditions.
Spring is changeable, with cool days, rain, and occasional late snow. Summer is warm and humid, and thunderstorms often form when moist air meets passing fronts. The valley’s sheltered setting can limit some direct coastal influence, but it does not block large storms crossing central Pennsylvania.
Fall brings cooler, drier spells, though strong fronts can bring rain. Winters are cold, with snow, sleet, or freezing rain during passing storms. Snow amounts vary from storm to storm. Nearby ridges can shape local winds and snowfall, while larger pressure systems guide the region’s overall weather.