With a population of around 8,500, Rossmoor sits in Maryland, United States. The city operates in the Eastern Time Zone.
In 2025, Rossmoor recorded an average annual temperature of 55°F. The hottest temperatures reached 100°F in June; the coolest were 6°F in January. Total precipitation for the year was 49 inches, with the wettest month being May. Snowfall for the year totaled approximately 6 inches.
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