Lamar County Climate
Lamar County, Texas
Avg Annual Temp
65.0°F
Annual Precip
48.9"
Annual Snowfall
—
Extreme Heat Days
95.7
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Lamar County Weather
A Warm Humid Subtropical Climate
Lamar County maintains an average annual temperature of 65.0°F, placing it significantly higher than the national median. This climate provides a long growing season and consistent warmth throughout the year.
Typical Temperatures for the Lone Star State
The county's 65.0°F average temperature sits just below the Texas state average of 65.5°F. While it mirrors the state's warmth, it receives 48.9 inches of rain annually, which is much higher than the state average of 31.9 inches.
Lamar's Unique Rainfall Patterns
With nearly 49 inches of annual precipitation, Lamar is significantly wetter than its western neighbors. This moisture fuels a July average of 85.3°F and maintains the humid characteristics of Northeast Texas.
Long Summers and Frequent Heat
Residents face 96 extreme heat days per year where temperatures reach or exceed 90°F. While snowfall data is limited for this area, the winter average of 45.7°F ensures that cold snaps are generally short-lived.
Preparing for Humidity and High Heat
Effective HVAC systems are essential to handle 96 days of 90-degree weather. Additionally, the high annual rainfall of 48.9 inches requires residents to maintain clear drainage systems and invest in durable rain gear.
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.