Louisville (KY) Temperature by Month
Louisville, Kentucky, United States of America has an average annual maximum temperature of 20°C (68°F), ranging from 6°C (43°F) in January to 31°C (88°F) in August. Below you'll find a full monthly breakdown and a comparison with cities worldwide.
Louisville Monthly Temperatures
Depending on the time of the year, temperatures range from very warm to cold in Louisville. Nighttime lows follow the same pattern, ranging from 20°C (68°F) to -4°C (25°F).
The chart below illustrates the average maximum day and minimum night temperatures in Louisville by month:
The coldest point of the day usually falls between 4 AM and 6 AM, with temperatures peaking around 3 PM. August, the city's warmest month, gets 275 hours of sunshine.
The chart below shows the average temperature throughout the year:
Daily Historical Temperatures
50-year average (1976-2025)
Average high and low temperatures for each day of the month based on long-term records.
Average temperatures in July
Historical Louisville Temperatures: 1976-2026
Browse day-by-day temperature records for Louisville spanning 51 years. Select any month and year to see actual high and low temperatures recorded on each day.
Temperature: Louisville vs the United States of America
The map below shows the annual temperature across the United States of America. You can also select individual months if you want to compare a specific time of year.
very warm
warm
pleasant
moderate
cold
very cold
Louisville vs World: Temperature Compared
Louisville's average annual maximum temperature is 20°C (68°F). To put that in context, here's how it compares to a few well-known destinations:
Rome, Italy averages 20°C (68°F) annually, with reliably warm summers and comfortable winters.
Glasgow, Scotland averages 13°C (55°F) a year — mild but often grey, with cold winters and rarely hot summers.
Seoul, South Korea averages 18°C (64°F) a year, with four clear seasons, cold winters, and hot humid summers.
Adelaide, Australia averages 21°C (70°F) a year, with warm summers, mild winters, and relatively low rainfall year-round.
What Does the Temperature Feel Like in Louisville?
Temperature alone doesn't tell the whole story — humidity plays a big role in how warm or cold it actually feels. High humidity in summer makes the heat feel more intense, particularly once temperatures climb above 25°C. In winter, the same humidity can make cold air feel sharper than the thermometer suggests.
In the cooler months, when temperatures drop below 10°C, high humidity makes the cold feel more cutting than it would in dry conditions.
In Louisville, January is the coolest month, with average highs of 6°C (43°F) and humidity around 67% — considered high. In August, the warmest month, temperatures average 31°C (88°F) with 71% humidity — conditions that feel high. For a full picture, see our humidity page.
Climate temperature data is typically calculated as a 30-year average. This smooths out year-to-year variability and gives a more reliable picture of what a place is actually like, rather than what happened in any single unusual year.
The readings come from a range of sources — land-based weather stations, ocean buoys, ships, and satellites. That data is collected by weather services around the world, then pooled, quality-checked, and averaged to produce the climate records you see here.
For cities and regions with significant elevation, altitude is one of the biggest factors shaping local temperatures. As a rule of thumb, temperatures fall by around 6°C for every 1,000 metres gained — so a city at 2,000 metres will typically be around 12°C cooler than a city at sea level in the same region. Higher ground also tends to see more dramatic day-to-night temperature swings, since thinner air loses heat faster after sunset.
For more on Louisville's weather — including monthly rainfall, sunshine hours, and humidity — visit our Louisville climate page.
