Grayson County Climate
Grayson County, Kentucky
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
55.3°F
Annual Precip
50.6"
Annual Snowfall
6.9"
Extreme Heat Days
38
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
7a
Minimum winter temperature range for plant survival
3,898
Supports most vegetables & fruits
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Grayson County
Climate Verdict
Grayson County has a mild, with an average annual temperature of 55.3°F, moderately wet with 50.6 inches of annual precipitation, occasional hot days — 38.2 per year above 90°F, light snow averaging 6.9 inches per year. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are cold, with January averaging 32.8°F. summers are warm — July averages 76.2°F. The 43°F seasonal variation provides noticeable but manageable change.
Outdoor & Gardening Guidance
The moderate temperatures support hiking, cycling, and camping comfortably in spring, summer, and fall.
Regional Context
Grayson County closely matches the Kentucky statewide average temperature of 56.0°F.
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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Data sources: NOAA National Centers for Environmental Information (NCEI), U.S. Climate Normals 1991-2020. Forecast and alert data from National Weather Service API. Air quality data from Open-Meteo.
Climate normals are 30-year averages of weather variables. Station data is aggregated to county level. Forecasts and alerts are fetched live and may change frequently. Data is informational only — not a substitute for official National Weather Service forecasts or emergency weather warnings.