Daytime temperatures of 38 C (100 F) are rare, but the high humidity and monotony of the temperatures can make conditions very unpleasant.
(Daytime temperatures of 38 C; are; rare) (the high humidity and monotony of the temperatures; can make; conditions very unpleasant)
Daytime temperatures of 38 C the high humidity and monotony of the temperatures
are can make
rare
conditions very unpleasant