Lyon County Climate
Lyon County, Kentucky
Avg Annual Temp
60.9°F
Annual Precip
53.1"
Annual Snowfall
—
Extreme Heat Days
49.9
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Lyon County Weather
Subtropical influence and high warmth
Lyon County is exceptionally warm for the region, averaging 60.9°F annually. This temperature is significantly higher than the national median, reflecting a deep subtropical influence.
The group's warmest county
Lyon is the warmest in this group, sitting 4.7 degrees above the Kentucky state average. It also sees 50 extreme heat days, more than double the frequency of most other Kentucky counties.
Hottest in the regional set
Compared to Livingston, Lyon is nearly 4 degrees warmer and sees 12 more extreme heat days. It is the hottest county in this regional set, with July averages topping 80°F.
Extreme summer heat, mild winters
Summer is long and hot, featuring 50 days of 90°F weather and a 79.2°F average. Winters are the mildest in the region, staying well above freezing with a 41.3°F average.
Invest in heavy-duty cooling
This climate demands heavy-duty cooling systems and heat-tolerant landscaping. Prepare for 50 days of extreme heat and ensure outdoor activities are scheduled for early morning or late evening.
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.