Fresno UV index in September
Typical ultraviolet levels for Fresno during September, from the past year of data.
Very High
Fresno
Very high UV. Limit sun exposure, especially during midday; protective clothing, sunscreen, and a hat are essential.
8
UV Index
September average
Low
Moderate
High
Very High
Extreme
September UV
8.0391
Risk level
Very High
Yearly peak
10.4849
Peak month
July
Fresno UV index — monthly trend
Average UV index by month over the past year, with September highlighted.
Visiting Fresno in September?
In September, Fresno's typical UV index is about 8.0391 — 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, Fresno sees the strongest UV in Summer, peaking around 10.4849 in July. Plan sun protection accordingly.
