Harrison County Climate
Harrison County, Texas
Avg Annual Temp
64.4°F
Annual Precip
51.0"
Annual Snowfall
1.0"
Extreme Heat Days
88.69999999999999
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Harrison County Weather
Humid Piney Woods Climate
Harrison County's 64.4°F average temperature sits above the national median. It receives 51.0 inches of rain annually, characterizing the lush East Texas landscape.
Close to the State Temperature Average
The county nearly matches the Texas average temperature of 65.5°F. However, it is much wetter than the state norm, receiving 19 inches more rain than the average.
Wetter Than Northern Neighbors
Harrison is significantly wetter than Haskell County to the west. It shares a similar humid profile with Henderson County but receives slightly more annual precipitation.
Rainy Summers and Cool Winters
Summers average 81.4°F with 89 days of extreme heat. The county sees a proper winter cooling to 47.1°F and averages one inch of snow annually.
Prepped for Rain and Sun
Prepare for 89 days of temperatures over 90°F with efficient home cooling. Clear gutters regularly to manage the high 51.0-inch 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.