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McNairy County, TN (shown in white) has 562.84 mi² of land area and 0.77 mi² of water resources. The county is bordered by:
The county's elevations range from a low of 357.6' to a high of 659.5', with a weighted average of 489.4' above sea level.
Temperatures range from average lows around 28.3°F to average highs around 91°F. A year-round daily temperature averages 60.8°F. Average annual precipation is 58.2". With these temperatures and precipation, the majority of the county scores as an 7B 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 McNairy County is 26,414 with 10,946 households. These households are spread across 11 unique municipalties (not all shown).
