"fall evenings" is correct and usable in written English.
You can use it to refer to the evenings of fall - the season between summer and winter. For example: "I love going on walks on crisp fall evenings."
In the Ingallses' day, hog-butchering time waited until the fall evenings were cold enough to freeze the meat, so it could keep all winter.
The Smokey Peach ($10) with tequila, mezcal, lime and the namesake stone fruit has the ideal Oaxacan warmth for fall evenings.
There are 11 fireplaces, including one on the old brick terrace that faces the south gardens, a nice touch for chilly spring and fall evenings.
Fall evenings are also prime hours for striped bass fishing on Long Island, and Jones Beach gets its share of surfcasters.
In Washington, we understand, daylight saving ended this year in September, which means that its residents didn't get a chance to enjoy as many delightful fall evenings as New York's residents did.
Oprah's viewers genuinely appreciate her guidance, Franzen's readers genuinely appreciate his writing, and ultimately what her selection of his book means is that many millions of individuals will be spending very pleasant fall evenings in a comfortable chair with a good book.
The women, in the pre-fall evening-out uniform of tiny shorts and four-inch heels, had fortified themselves for the outing with tequila shots at home.
It's autumn, the season of crisp evenings, falling leaves and gardening journalists reusing their favourite autumnal phrase: "putting the garden to bed".
Evenings fall into a familiar routine.
We get elderly people who've had a fall on Saturday evenings.
