Grimes, Iowa is a small town located in Polk County. The climate in Grimes is characterized by warm summers and cold winters, with an average annual temperature of 50°F. The town is situated in the Middle Raccoon River watershed, and its hydrology is influenced by the river's flow. The river is a popular destination for fishing and kayaking, with several public access points along its course. Other outdoor recreation opportunities in Grimes include the Beaverbrooke Park, which features a playground, picnic areas, and walking trails. The town also hosts several community events throughout the year, including a farmers' market, a summer concert series, and an annual festival.