UV Index
UV Index
Today's UV index in Huntsville, United States 
will be up to 9.9, indicating a very high level of sun exposure for the average person. Check our tips for today to make sure you're safe in the sun.
Last checked: 2025-06-23
With a UV index of 9.9 in Huntsville, it's crucial to safeguard your skin from harmful UV rays. Protect yourself by minimizing sun exposure, wearing protective clothing, and applying SPF 30+ sunscreen every 2 hours.
Huntsville’s UV index often ranges from moderate to high, especially in the summer months, with peak levels around midday. Winter tends to have lower UV levels, usually in the low to moderate range.
The city experiences hot, humid summers with temperatures often in the upper 80s to 90s Fahrenheit. Winters are mild and cool, sometimes dipping below freezing, and spring and fall bring moderate temperatures and occasional rain.
Compared to the wider southeastern United States, Huntsville has a similar humid subtropical climate. It is generally warmer and wetter than northern states but cooler than nearby southern states like Florida during winter months. Neighboring Tennessee experiences slightly cooler winters.
See the UV index hour by hour for Huntsville, along with the temperature and how cloudy it is. If the UV level is higher than moderate, it's best to avoid direct sunlight.