waterloo ia temperature
Waterloo has a humid continental climate zone (KÃ¶ppen classification Dfa), typical of the state of Iowa, and is part of USDA Plant Hardiness zone 5a. The normal monthly mean temperature ranges from 18.5 Â°F (â7.5 Â°C) in January to 73.6 Â°F (23.1 Â°C) in July.