Allentown UV index in December
Typical ultraviolet levels for Allentown during December, from the past year of data.
Low UV. You can safely enjoy being outside; the sun's rays are not very strong.
December average
Allentown UV index — monthly trend
Average UV index by month over the past year, with December highlighted.
Visiting Allentown in December?
In December, Allentown's typical UV index is about 1.5583 — a low risk level. Low UV. You can safely enjoy being outside; the sun's rays are not very strong.
Across the year, Allentown sees the strongest UV in Summer, peaking around 9.7109 in July. Plan sun protection accordingly.