Collocations for autumn - noun

last, next, this (coming) | early, late, mid- | wet

weather | sun, sunlight, sunshine | frost/frosts, rain/rains | gale, wind | landscape, sky | colours
The trees were beginning to turn orange and yellow with autumn colours.

leaf
the sound of autumn leaves rustling

equinox | term
classes to be held for schoolchildren during the autumn term

collection, exhibition
their autumn collection of dresses