Did some temperature measurements, today.

A 23W CFL, after two hours, open table lamp fixture, showed a
plastic base surface temperature of 144 degrees F.

A 13W CFL, after two hours, open, inverted bathroom fixture,
plastic base surface temperature 141 degrees F.

8.5 LED lamp in an inverted open ceiling fixture after two hours
aluminum base surface temperature- 141 Degrees F.

Temperature of the illuminated surface each 99-109 degrees F.

Surface temperature of the illuminated surface of 75W incandescent
open fixtu 171 degrees.