How humid does it get during the summer months?
Question & Answer about Kentucky
Updated April 26, 2026
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Kentucky State Facts
State Flag
Kentucky
Capital
Frankfort
State Bird
Northern Cardinal
Statehood
June 1, 1792
State Flower
Goldenrod
Population
4.5 million (2020)
Answer
Kentucky experiences high humidity levels during the summer months, often making the weather feel hotter than the actual temperature. Average relative humidity in summer typically ranges from 70% to 80%, with mornings often more humid and slight decreases in the afternoon due to daytime heating.
The state’s humid subtropical climate, combined with its geography of rivers, forests, and rolling hills, contributes to consistently moist air during summer. Cities like Louisville and Lexington frequently experience muggy conditions, especially in July and August, when temperatures average in the mid-80s to low 90s Fahrenheit. This humidity can lead to discomfort, increased sweating, and a higher heat index, which is important for residents and visitors to consider for health and outdoor activities.
Key Points:
- Summer relative humidity often between 70% and 80%
- Morning humidity tends to be higher than afternoons
- Humid subtropical climate with moist air from local geography
- Heat index often higher than actual temperature due to humidity
The state’s humid subtropical climate, combined with its geography of rivers, forests, and rolling hills, contributes to consistently moist air during summer. Cities like Louisville and Lexington frequently experience muggy conditions, especially in July and August, when temperatures average in the mid-80s to low 90s Fahrenheit. This humidity can lead to discomfort, increased sweating, and a higher heat index, which is important for residents and visitors to consider for health and outdoor activities.
Key Points:
- Summer relative humidity often between 70% and 80%
- Morning humidity tends to be higher than afternoons
- Humid subtropical climate with moist air from local geography
- Heat index often higher than actual temperature due to humidity
