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Westmoreland County, PA (shown in white) has 1,027.71 mi² of land area and 8.22 mi² of water resources. The county is bordered by:
The county's elevations range from a low of 800.5' to a high of 2,962.6', with a weighted average of 1,323.7' above sea level.
Temperatures range from average lows around 18.2°F to average highs around 82.9°F. A year-round daily temperature averages 50.2°F. Average annual precipation is 50.1". With these temperatures and precipation, the majority of the county scores as an 6A using the USDA Plant Hardiness Zone Map (the standard by which gardeners and growers can determine which perennial plants are most likely to thrive in a location).
The estimated population of Westmoreland County is 353,812 with 152,488 households. These households are spread across 65 unique municipalties (not all shown).
