Fannin County Climate
Fannin County, Texas
Avg Annual Temp
63.5°F
Annual Precip
45.2"
Annual Snowfall
1.3"
Extreme Heat Days
78.4
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Fannin County Weather
Wet and warm northern Texas
Fannin County averages 63.5°F annually, which is well above the national median but cooler than much of Texas. It is a high-rainfall area, receiving 45.2 inches of precipitation annually.
One of the state's wettest spots
Fannin County is significantly wetter than the Texas state average, recording 45.2 inches of rain compared to 31.9 inches. At 63.5°F, it is also about 2 degrees cooler than the state average.
Rainier than Ellis County
Fannin County receives 45.2 inches of rain, nearly 5 inches more than Ellis County. It is also the coolest in this group, with an annual average of 63.5°F compared to Ellis's 65.7°F.
Moderate heat and wet winters
The county experiences 78 days of extreme heat, fewer than most neighboring regions, though July still averages 83.5°F. January is the coldest in the region at 42.8°F, accompanied by 1.3 inches of annual snow.
Planning for heavy rainfall
With 45.2 inches of annual rain, superior roof maintenance and gutter systems are essential. Residents should also prepare for 78 days of 90°F+ heat, even though the overall climate is cooler than the state average.
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.