Knoxville UV index in September
Typical ultraviolet levels for Knoxville during September, from the past year of data.
Very High
Knoxville
Very high UV. Limit sun exposure, especially during midday; protective clothing, sunscreen, and a hat are essential.
8.4
UV Index
September average
Low
Moderate
High
Very High
Extreme
September UV
8.3898
Risk level
Very High
Yearly peak
10.8046
Peak month
July
Knoxville UV index — monthly trend
Average UV index by month over the past year, with September highlighted.
Visiting Knoxville in September?
In September, Knoxville's typical UV index is about 8.3898 — a very high risk level. Very high UV. Limit sun exposure, especially during midday; protective clothing, sunscreen, and a hat are essential.
Across the year, Knoxville sees the strongest UV in Summer, peaking around 10.8046 in July. Plan sun protection accordingly.
