August weather forecastLouisville, KY
August
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. Daylight hours begin to shrink a touch to roughly 13.6 hours. The wind generally maintains its speed throughout the month, staying steady at comforting levels.Temperature
August's onset in Louisville, Kentucky, records an average high-temperature of a warm 85.6°F (29.8°C), a near match to July's 87.1°F (30.6°C). During August nights, Louisville records an average temperature of 65.8°F (18.8°C).Heat index
The heat index value during August is calculated to be a torrid 95°F (35°C). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.Note that heat index values are valued for light wind and location in the shade. Exposing to direct sunshine may enhance heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. Elements such as metabolic variations, being pregnant, and physical activity can impact one's weather perception. Consider that direct sun exposure can intensify the felt heat, adding potentially 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values hold particular significance for children. Young ones often underestimate the need for rest and rehydration. Thirst appears late in dehydration - hence, it is important to keep hydrated, particularly during prolonged physical activities.
Perspiration, which is the evaporation of sweat, is a primary way the human body manages and dispels excessive warmth. Elevated relative humidity diminishes evaporation, thereby reducing the body's ability to shed heat and creating a feeling of being too warm. Rising body temperatures resulting from an imbalance in heat absorption can lead to potential thermal issues.
Humidity
August and October, with an average relative humidity of 73%, are the least humid months in Louisville.Rainfall
In Louisville, in August, it is raining for 14.4 days, with typically 1.54" (39mm) of accumulated precipitation. Throughout the year, in Louisville, there are 145.2 rainfall days, and 17.64" (448mm) of precipitation is accumulated.Snowfall
In Louisville, snow does not fall in May through October.Daylight
The average length of the day in August is 13h and 36min.On the first day of August, sunrise is at 6:46 am and sunset at 8:52 pm. On the last day of the month, sunrise is at 7:12 am and sunset at 8:13 pm EDT.
Sunshine
In Louisville, Kentucky, the average sunshine in August is 9.8h.UV index
May through August, with an average maximum UV index of 6, are months with the highest UV index in Louisville, Kentucky. A UV Index of 6 to 7 symbolizes a high health risk from unsafe exposure to UV radiation for the ordinary person.Note: In August, a daily UV index of 6 turns into the following recommendations:
Persist with safeguards and heed sun safety doctrines. Keeping sunburn at bay is of prime importance. Stay out of direct sunlight between 10 a.m. and 4 p.m., when UV radiation is most intense, and remember that not all shade structures provide complete protection. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Louisville, KY
- Average high temperature in August: 85.6°F
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).
- Average low temperature in August: 65.8°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 in August
Louisville, KY
- Average pressure in August: 29.99"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 in August
Louisville, KY
- Average wind speed in August: 4.9mph
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 in August
Louisville, KY
- Average humidity in August: 73%
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 in August
Louisville, KY
- Average rainfall in August: 1.54"
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 in August
Louisville, KY
- Average rainfall days in August: 14.4 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 in August
Louisville, KY
- Average snowfall in August: 0"
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 in August
Louisville, KY
- Average snowfall days in August: 0 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 in August /
Average sunshine in August
Louisville, KY
- Average daylight in August: 13h 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 August: 9h and 48min
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 in August
Louisville, KY
- Average sunshine days in August: 13.8 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 in August
Louisville, KY
- Average UV index in August: 6
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 in August
Louisville, KY
- Average cloud cover in August: 28
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 in August
Louisville, KY
- Average visibility in August: 6mi
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).
