Climate and monthly weather forecastLouisville, KY
Climate and monthly weather forecast
The climate of Louisville
This city rests on the borders of the Ohio River, south of the Midwest and north of the South, matching its climate to that of the humid subtropical band. Designated as Cfa in the Köppen climate classification, Louisville, Kentucky, USA, has a diverse climate. Deviations are observed in each weather parameter throughout the year, creating an exciting mix of seasons.Temperature variations exhibit an interesting pattern. Louisville experiences a wide range of temperatures, from lows averaging 25.9°F (-3.4°C) in the coldest month to highs reaching an average of 87.1°F (30.6°C) in the hottest month. Humidity levels maintain an average between 73% and 80% year-round, showing little variation per month. Meanwhile, rainfall experiences peaks in May and July, with lows seen in January and September.
Snowfall primarily occurs between December to March with maximum snow accumulation of 1.06" (27mm) in February and 0.98" (25mm) in January. Lexington experiences the most daylight hours— approximately 14.8 hours— in June and the least in December with about 9.5 hours. Sunshine is primarily enjoyed in June and July with an average of 10.4 hours a day.
UV index peaks from May to August, reaching a maximum of 6. Winds show relatively consistent readings for most of the year, exhibiting increases in December while pressure variations are minimal. Cloud coverage is least in August (28%) and highest in January and December each year (both 56%).
The best time to visit Louisville
The ideal time to visit Louisville depends largely on the visitor's weather preferences. If warm, balmy days filled with sunshine are desired, June through August could be the ideal period. With temperatures from 84°F (28.9°C) to 87.1°F (30.6°C), these months allow for plenty of time outside with about 10.4 hours of daily sunshine. Even though rainfall occurrences rise slightly during these months, the visibility stays clear at an average of 6 miles.The worst time to visit Louisville
Conversely, the months from December to February may prove challenging for visitors. Uncomfortably low temperatures - hovering between 25.9°F (-3.4°C) to 31.8°F (-0.1°C) - along with frequent snowfall and reduced daylight hours (around 9.5 to 9.9 hours) can disrupt travel and outdoor activities. The average wind speeds also increase during these months, and cloud coverage peaks at 56%, which can limit visibility.Spring weather in Louisville
Spring in Louisville means moderate temperatures and increased rainfall. From March to May, Louisville transitions from the chilly winter months into the warmth of summer. Daytime temperatures are quite comfortable— ranging from 54.1°F (12.3°C) to 75.7°F (24.3°C)— while the nights maintain a cool bearable 37.6°F (3.1°C) to 57.2°F (14°C). Rainfalls are more frequent during spring months with a peak in May at 1.89" (48mm).Summer weather in Louisville
Summer features warmth and humidity, with temperatures soaring between 75.7°F (24.3°C) to 87.1°F (30.6°C) between June to August. Nights are also warmer, with temperatures hovering between 64.2°F (17.9°C) to 67.5°F (19.7°C). However, Louisville's summer isn't just about heat, it's also about light. With the longest daylight hours of up to 14.8 hours in June, and an ample amount of sunshine averaging 10.4 hours daily, the city truly comes to life. Rainfall remains high during the summer months, reaching a peak in July at 1.89" (48mm).Autumn weather in Louisville
In autumn, temperatures gradually cool from the heat of the summer. September to November see daytime temperatures descend from 79.3°F (26.3°C) to 53.2°F (11.8°C) and night time temperatures falling to a cooler range of 60.1°F (15.6°C) to 37.6°F (3.1°C). Rainfall decreases over these months, but sunlight decreases more significantly, with November only receiving around 10.1 hours of daylight.Winter weather in Louisville
Winter in Louisville, from December to February, is marked by cold temperatures with averages ranging from 38.8°F (3.8°C) to 44.1°F (6.7°C) during the day and dipping as low as 25.9°F (-3.4°C) at night. Rainfall in this season is consistently low, but most precipitation comes in the form of snowfall. The months from December to February are recognized as the snowiest, with February experiencing the highest snowfall of 1.06" (27mm). Winter also sees the shortest days, with December having the smallest daylight duration of 9.5 hours.Weather in January
Starting the year, temperatures in Louisville, Kentucky can be quite chilly. January sees humidity levels at 78%, with temperatures hovering from 25.9°F (-3.4°C) up to 38.8°F (3.8°C). This drops in stark contrast to later months. Weather in January »Weather in February
Entering February, the temperature rise signals the transition of winter into the early dawn of spring. The weather remains largely unchanged from January, but a notable spike in temperature from 38.8°F (3.8°C) in January to 43.7°F (6.5°C) marks the commencement of a warming trend. Weather in February »Weather in March
March is often considered the cusp of spring in Louisville. With an average high temperature of 54.1°F (12.3°C) and a lower humidity of 77%, the city slowly warms from the chill of the first two months. The amount of daylight extends to 12 hours bringing more sunshine to the beautiful city. Weather in March »Weather in April
Louisville welcomes the month of April with a significant leap in temperatures, climbing up to 66.2°F (19°C). The city also experiences increased rainfall this month, with 1.81" (46mm) spread across nearly two weeks. The arrival of spring is undeniable with a marked increase in daylight hours, reaching up to 13.2 hours in the day. Weather in April »Weather in May
The month of May ushers in a period of significantly warmer weather. Temperatures surge to highs of around 75.7°F (24.3°C), bringing balmy days to town. In addition to increasing temperatures, there is a notable escalation in rainfall with 1.89" (48mm) distributed over about half the month. Weather in May »Weather in June
The arrival of summer in June is marked by an increase in highs, touching 84°F (28.9°C). June, together with July, provides the city with the longest daylight hours averaging around 14.8 hours. Rainfall decreases slightly to 1.54" (39mm), indicating a dip from the rainfall Louisville experienced in the past two months. Weather in June »Weather in July
Louisville, Kentucky sails into the peak of its summer, with July boasting of the highest temperatures of the year, reaching up to 87.1°F (30.6°C). This is supplemented by the longest stretch of daylight hours, taking sun-drenched days up to approximately 14.5 hours. Weather in July »Weather in August
As summer winds down in August, the climate in Louisville remains predominantly warm. Although the temperature recedes a bit to an average high of 85.6°F (29.8°C), it remains one of the warmest months of the year. The city sees a reduction in rainfall, falling to 1.54" (39mm) after July's surge. Weather in August »Weather in September
September brings with it the first whispers of autumn. The significant drop in temperature to a high of 79.3°F (26.3°C) adds a cool undertone to the crisp air. Days become shorter, with daylight hours receding to 12.4. Rainfall falls slightly to 1.06" (27mm), marking the onset of the drier season. Weather in September »Weather in October
Louisville begins to feel the tug of the chill in October. The average high temperature drops noticeably to 66.7°F (19.3°C) from the 79.3°F (26.3°C) of September, bringing noticeably cooler days. October is typically a dry month, with rainfall averaging 1.34" (34mm) over the course of the month. Weather in October »Weather in November
As the year nears its end, November sees a fall in temperatures with a high of 53.2°F (11.8°C). Rainfall levels decrease slightly to 1.26" (32mm), following the dry season that starts in October. Wind speed continues to climb, setting a brisk tone for outdoor activities. Weather in November »Weather in December
Wrapping up the year, the weather cools off considerably in December, with temperatures ranging from 31.8°F (-0.1°C) to 44.1°F (6.7°C). December is a slightly wetter month with an increase in average rainfall to 1.3" (33mm). Weather in December »Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
In Louisville, Kentucky, the average lowest temperatures are observed in January, with a high of 38.8°F (3.8°C) and a low of 25.9°F (-3.4°C).
January and September are months with the least rain in Louisville, Kentucky, when the rain falls for 9 days and typically aggregates up to 1.06" (27mm) of rain.
Throughout the year, in Louisville, there are 145.2 rainfall days, and 17.64" (448mm) of precipitation is accumulated.
Months with snowfall in Louisville are January through April, November and December.
Throughout the year, there are 25 snowfall days, and 3.7" (94mm) of snow is accumulated.
The months with the least sunshine in Louisville, Kentucky, are January and December, with an average of 4.4h of sunshine.
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Louisville, Kentucky.
February and December, with an average relative humidity of 80%, are most humid months in Louisville, Kentucky.
The month with the most snowfall in Louisville is February, when snow falls for 6.9 days and typically aggregates up to 1.06" (27mm) of snow.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Louisville, Kentucky, and the time zone changes from EST to EDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from EDT to EST.
The wettest months are May and July, with an average 1.89" (48mm) of rainfall.
May through October are months without snowfall in Louisville.
The months with the highest UV index are May through August, with an average maximum UV index of 6.
The month with the longest days in Louisville, Kentucky, is June, with an average of 14h and 48min of daylight.
June and July, with an average of 10.4h of sunshine, are months with the most sunshine in Louisville.
Louisville's temperature records reveal July as the warmest month, marked by average highs of 87.1°F (30.6°C) and lows of 67.5°F (19.7°C).
August and October, with an average relative humidity of 73%, are the least humid months.
With an average of 9h and 36min of daylight, December has the shortest days of the year in Louisville.
Average temperature
Louisville, KY
The warmest month (with the highest average high temperature) is July (87.1°F).
The month with the lowest average high temperature is January (38.8°F).
The month with the highest average low temperature is July (67.5°F).
The coldest month (with the lowest average low temperature) is January (25.9°F).
Average pressure
Louisville, KY
- Average pressure in January:
30.15"Hg - Average pressure in February:
30.11"Hg - Average pressure in March:
30.09"Hg - Average pressure in April:
29.96"Hg - Average pressure in May:
29.98"Hg - Average pressure in June:
29.95"Hg
- Average pressure in July:
29.98"Hg - Average pressure in August:
29.99"Hg - Average pressure in September:
30.03"Hg - Average pressure in October:
30.04"Hg - Average pressure in November:
30.14"Hg - Average pressure in December:
30.13"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed
Louisville, KY
- Average wind speed in January:
7.8mph - Average wind speed in February:
7.7mph - Average wind speed in March:
7.5mph - Average wind speed in April:
7.6mph - Average wind speed in May:
6.2mph - Average wind speed in June:
5.7mph
- Average wind speed in July:
4.9mph - Average wind speed in August:
4.9mph - Average wind speed in September:
5.3mph - Average wind speed in October:
6.5mph - Average wind speed in November:
6.8mph - Average wind speed in December:
7.1mph
The windiest month (with the highest average wind speed) is January (7.8mph).
The calmest months (with the lowest average wind speed) are July and August (4.9mph).
Average humidity
Louisville, KY
The months with the highest relative humidity are February and December (80%).
The months with the lowest relative humidity are August and October (73%).
Average rainfall
Louisville, KY
- Average rainfall in January:
1.06" - Average rainfall in February:
1.57" - Average rainfall in March:
1.38" - Average rainfall in April:
1.81" - Average rainfall in May:
1.89" - Average rainfall in June:
1.54"
- Average rainfall in July:
1.89" - Average rainfall in August:
1.54" - Average rainfall in September:
1.06" - Average rainfall in October:
1.34" - Average rainfall in November:
1.26" - Average rainfall in December:
1.3"
The wettest months (with the highest rainfall) are May and July (1.89").
The driest months (with the least rainfall) are January and September (1.06").
Average rainfall days
Louisville, KY
- Average rainfall days in January:
9 days - Average rainfall days in February:
8.9 days - Average rainfall days in March:
12.6 days - Average rainfall days in April:
13.8 days - Average rainfall days in May:
16 days - Average rainfall days in June:
12.4 days
- Average rainfall days in July:
15.5 days - Average rainfall days in August:
14.4 days - Average rainfall days in September:
12.4 days - Average rainfall days in October:
9.8 days - Average rainfall days in November:
9 days - Average rainfall days in December:
11.4 days
The month with the highest number of rainy days is May (16 days).
The month with the least rainy days is February (8.9 days).
Average snowfall
Louisville, KY
The month with the highest snowfall is February (1.06").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days
Louisville, KY
- Average snowfall days in January:
7.3 days - Average snowfall days in February:
6.9 days - Average snowfall days in March:
3.4 days - Average snowfall days in April:
0.5 days - Average snowfall days in May:
0 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0.1 days - Average snowfall days in November:
1.6 days - Average snowfall days in December:
5.2 days
The month with the highest number of snowfall days is January (7.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Louisville, KY
- Average daylight in January:
9h and 54min - Average daylight in February:
10h and 48min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 12min - Average daylight in May:
14h and 18min - Average daylight in June:
14h and 48min
- Average daylight in July:
14h and 30min - Average daylight in August:
13h and 36min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 12min - Average daylight in November:
10h and 6min - Average daylight in December:
9h and 36min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in January:
4h and 24min - Average sunshine in February:
5h and 30min - Average sunshine in March:
6h and 6min - Average sunshine in April:
7h and 42min - Average sunshine in May:
8h and 54min - Average sunshine in June:
10h and 24min
- Average sunshine in July:
10h and 24min - Average sunshine in August:
9h and 48min - Average sunshine in September:
8h and 24min - Average sunshine in October:
7h and 0min - Average sunshine in November:
5h and 30min - Average sunshine in December:
4h and 24min
The months with the most sunshine are June and July (Average sunshine: 10h and 24min).
The months with the least sunshine are January and December (Average sunshine: 4h and 24min).
Average sunshine days
Louisville, KY
- Average sunshine days in January:
16.3 days - Average sunshine days in February:
12.8 days - Average sunshine days in March:
14.4 days - Average sunshine days in April:
13.8 days - Average sunshine days in May:
11.7 days - Average sunshine days in June:
14 days
- Average sunshine days in July:
11.8 days - Average sunshine days in August:
13.8 days - Average sunshine days in September:
14.8 days - Average sunshine days in October:
19.2 days - Average sunshine days in November:
19.3 days - Average sunshine days in December:
15.2 days
The month with the most sunshine days is November (19.3 days).
The month with the least sunshine days is May (11.7 days).
Average UV index
Louisville, KY
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover
Louisville, KY
The month with the most cloud cover is January (Cloud cover 56).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility
Louisville, KY
The months with the highest visibility are March, April, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February and May (5mi).
