There are plenty of synonyms for the phrase "rainy day." Some of the most common include "wet weather," "drizzly day," "damp day," "gloomy day," "overcast day," "stormy day," and "showery day." Each of these phrases paints a slightly different picture of the weather conditions. For example, "stormy day" implies thunder, lightning, and possibly even hail, while "drizzly day" suggests a light and persistent rain. No matter what synonym you use, though, the phrase "rainy day" always seems to evoke a sense of melancholy and the need to stay indoors and cozy up with a good book or movie.