Louisville, Kentucky
weather for louisville.
Louisville sits in a wide bend of the Ohio River where Kentucky meets Indiana, in the climatic transition zone where the humid continental Midwest meets the humid subtropical Upland South. The Ohio River runs through the middle of the metro and produces its own valley fog and modulation, the surrounding Bluegrass country gives the city its agricultural character, and the seasons inherit both the Midwestern and Southern patterns. Derby Day in early May is the meteorological event the city plans around — the chance of a thunderstorm interrupting the race is taken seriously.
- Humidity
- 52%
- Wind
- 7mph
- UV Index
- 0
- Visibility
- 6.2mi
- Today77°56°
- Fri75°55°90%
- Sat71°53°
- Sun80°58°
- Mon77°68°39%
- Tue82°63°100%
- Wed78°66°100%
- Thu78°60°
Today’s brief
what vesper sounds like in louisville.
“River fog through downtown until ten and the Mt. Washington overlook is sitting in clear blue with the city below it still in soup. The inversion will break by noon. Otherwise a soft early-May Louisville morning — the kind that has Derby weather watchers checking the radar every fifteen minutes.”
— Vesper, Louisville · Saturday
Local weather
what makes louisville weather unique.
The same sunset model runs in the Vesper iOS app. The app adds personal calibration that learns from every sunset you rate.
Editorial note
sunsets in louisville.
Louisville sunsets are best from the elevated terraces above the river basin — the Big Four Bridge pedestrian crossing, the Waterfront Park overlooks, the western edge of Cherokee Park. The combination of the wide Ohio River reflecting low-angle light westward and the rolling Indiana country across the river produces consistent sunset color, especially in the post-storm windows of late spring and early fall.
Unlike Apple Weather, Vesper writes the Louisville sky as the embodied experience it actually is, not a temperature number with a generic icon.
What is the best weather app for Louisville?
Vesper is the best weather app for Louisville because it reads the Ohio River valley as a transitional climate distinct from both the Midwest and the Upland South. The brief tracks the river fog that forms on cool mornings as moisture evaporates from the warmer Ohio into cooler air above, the spring severe weather corridor that activates each April, the summer humidity dome that traps haze in the river basin, and the winter ice storms that arrive when warm Gulf air aloft overrides shallow cold surface air.
Frequently Asked Questions
How does the Ohio River affect Louisville weather?
The Ohio River flows through the geographic middle of Louisville and produces a constant local moisture and thermal modulation effect. On cool autumn and winter mornings, water vapor evaporating from the warmer river surface produces persistent valley fog through downtown and the lower elevations. The river also provides modest temperature moderation along the immediate waterfront, with riverside neighborhoods running slightly warmer than the inland suburbs in winter.
What weather is Louisville known for during the Kentucky Derby?
The first Saturday in May historically sees a wide range of Derby weather — from sunny 80°F days to severe thunderstorms with rainfall heavy enough to affect the track condition. The 2018 Derby was run in heavy rain on a sloppy track. The 2020 Derby (held in September due to the pandemic) was in mild fall weather. The chance of afternoon thunderstorms in early May is real because central Kentucky sits in the secondary severe weather corridor that activates from April through June.
Why does Louisville experience ice storms instead of snow?
Winter precipitation in Louisville frequently falls as freezing rain rather than snow because warm Gulf air aloft overrides shallow cold air at the surface. The Ohio River valley sits in the typical path of warm-air-overrunning patterns, and snow falling into the warm layer melts and refreezes on contact with subfreezing surfaces below. Louisville sees one or two significant ice events per winter on average. The 2009 ice storm produced widespread damage across Kentucky and southern Indiana.
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