Des Moines, Iowa, experiences a humid continental climate characterized by distinct seasonal variations. Understanding these patterns is essential for residents and visitors alike.
Seasonal Temperature and Precipitation
Throughout the year, Des Moines undergoes significant temperature fluctuations. Winters are cold, with average lows around 15°F (-9.4°C) in January, while summers are warm and humid, with average highs reaching 83°F (28.4°C) in July. Precipitation is fairly evenly distributed, with annual averages around 36.55 inches (928 mm), peaking during the warmer months. Snowfall averages 36.5 inches (93 cm) per season, primarily occurring from November to April.
Environmental Initiatives
Des Moines has been proactive in addressing environmental challenges. In March 2026, the city partnered with the Iowa Environmental Council to enhance resilience against extreme weather and engage residents in sustainability efforts. This collaboration focuses on developing a city-wide resilience hub program and increasing stakeholder involvement in existing sustainability programs.
Additionally, the Greater Des Moines Botanical Garden introduced the “Dome Grown Collection” in May 2026, featuring plants cultivated on-site. This initiative aims to guide residents in selecting flora suited for Central Iowa, promoting local biodiversity and sustainable gardening practices.
Community-Led Environmental Efforts
Local organizations have also contributed to environmental stewardship. The Great Outdoors Foundation, in partnership with Microsoft, invested in the Legacy Woods Nature Sanctuary’s stormwater wetland and prairie restoration projects. These efforts aim to manage urban water quality and promote biodiversity in West Des Moines.
Furthermore, the City of West Des Moines established the GREEN Team in 2007, focusing on environmental projects such as tree planting, prairie burning, and stormwater management to sustain green spaces and waterways.
Understanding Des Moines’ climate and supporting local environmental initiatives are crucial steps toward fostering a sustainable and resilient community.