Cottage Grove, Minnesota, experiences a diverse climate characterized by distinct seasonal changes. Summers are warm and wet, while winters are freezing, snowy, and windy. Throughout the year, temperatures typically range from 10°F to 83°F, with extremes rarely dipping below -10°F or exceeding 91°F. The warm season spans approximately 3.9 months, from late May to mid-September, with average daily highs above 71°F. July stands as the hottest month, averaging a high of 82°F and a low of 64°F. Conversely, the cold season lasts about 3.3 months, from late November to early March, with average daily highs below 36°F. January is the coldest month, averaging a low of 10°F and a high of 25°F.
Precipitation is fairly evenly distributed throughout the year, with the wettest month being July, averaging 4.42 inches of rainfall. Snowfall predominantly occurs from December through February, totaling up to 12.61 inches throughout the season.
In response to these climatic conditions, Cottage Grove has implemented several environmental initiatives. The city’s Management Plan outlines strategies to protect local ponds, wetlands, and the discharge to the Mississippi River. Public education on environmental issues is a priority, with the city publishing various environmentally-focused supplements in the Cottage Grove Reports newsletter, included in monthly utility bills.
Water conservation is another key focus. Cottage Grove’s water is sourced from the Jordan aquifer and the Prairie Du Chien-Jordan aquifer, accessed via 12 wells ranging in depth from 284 to 427 feet. Residents are encouraged to protect these resources by avoiding pollution of surface water sources with yard and household waste. The Public Works Department offers waste oil drop-off services and provides guidance on disposing of harmful household wastes.
Understanding Cottage Grove’s climate and participating in local environmental initiatives are essential steps toward preserving the city’s natural resources and ensuring a sustainable future for the community.