summerlike

She had changed her dress for one as summerlike as the other, but still finer and more elaborate.

Yet here I was sitting out in a warm, summerlike day in my shirt sleeves, waiting comfortably—and the ducks were coming in, too!

The day had been clear and warm, one of the first summerlike days of spring.

The evening was calm, and for the season mild and summerlike.

He laughed and added, "It is pretty summerlike," as if he had not thought of it before.