Grayson County Climate
Grayson County, Kentucky
Avg Annual Temp
55.3°F
Annual Precip
50.6"
Annual Snowfall
6.9"
Extreme Heat Days
38.2
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Grayson County Weather
A Typical Middle-American Climate Profile
Grayson County’s average annual temperature of 55.3°F closely aligns with the national median for a temperate climate. The area receives 50.6 inches of precipitation annually, which is significantly higher than the average U.S. county.
Slightly Cooler Than the Kentucky Average
At 55.3°F, Grayson County is nearly a full degree cooler than the Kentucky state average of 56.2°F. Its annual precipitation perfectly matches the state benchmark of 50.6 inches, making it a representative model for Kentucky weather.
Hotter Summers Than Northern Neighbors
With 38 extreme heat days per year, Grayson is significantly hotter in the summer than Greenup County to the east. However, its 6.9 inches of annual snowfall is much lighter than the double-digit totals found in northern parts of the state.
Hot Summers and Manageable Winters
Summer highs often push past 90°F on 38 days each year, with July averaging a warm 76.2°F. Winters are chilly but not extreme, featuring a January average of 32.8°F and roughly 6.9 inches of total snow.
Invest in High-Efficiency Cooling
Given the 38 days of extreme heat, a well-maintained HVAC system is the most important home investment for Grayson residents. A standard snow shovel is usually sufficient for the modest winter snowfall that typically melts within a few days.
Frequently Asked Questions
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Track your own weather in Grayson County
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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.