Terrell County Climate
Terrell County, Texas
Avg Annual Temp
67.0°F
Annual Precip
12.0"
Annual Snowfall
0.4"
Extreme Heat Days
121.2
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Terrell County Weather
Arid Heat in the Trans-Pecos
Terrell County’s 67.0°F annual average is roughly 12 degrees higher than the national median. The region is defined by its desert-like climate and extreme sun exposure.
Hotter and Drier Than Texas
At 67.0°F, Terrell County exceeds the Texas state average temperature of 65.5°F. Its 12.0 inches of annual precipitation is less than half of the 31.9-inch state average.
A Desert Peak Near the Border
Terrell is significantly more arid than Val Verde County to the east, which benefits from more coastal influence. It endures 121 extreme heat days, making it one of the most sun-scorched areas in the region.
Long Summers, Minimal Winter Moisture
The July average reaches 83.3°F, contributing to a grueling 121 days of temperatures over 90°F. Snow is rare, with only 0.4 inches falling in a typical year.
Gear Up for the Sun
Extreme UV protection and cooling systems are essential for the 121 days of heat. Water conservation is a way of life here given the sparse 12 inches of annual rainfall.
Frequently Asked Questions
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Data source: NOAA National Centers for Environmental Information (NCEI), U.S. Climate Normals 1991-2020.
Climate normals are 30-year averages of weather variables computed from 1991 to 2020. Station data is aggregated to county level using spatial averaging. Data is informational only — not a substitute for official National Weather Service forecasts or emergency weather warnings.