Irondale, Missouri is a small town located in Washington County in the eastern part of the state. The climate in Irondale is classified as humid subtropical, characterized by hot and humid summers and mild winters. The average annual temperature is around 58°F (14°C), with July being the hottest month and January the coldest.

Hydrologically, Irondale is situated in close proximity to the Big River, which flows through the region. The river provides opportunities for water-based activities such as fishing, canoeing, and kayaking. The river's tributaries and nearby creeks offer additional options for exploring the outdoors.

Outdoor recreation in Irondale is abundant and caters to different interests. The region is known for its scenic beauty, offering opportunities for hiking, camping, and birdwatching. Mark Twain National Forest, a short drive away, provides extensive trails for hiking and biking, as well as hunting and fishing options. The proximity to St. Francois State Park also offers camping, picnicking, and swimming opportunities.

Overall, Irondale offers a moderate climate, proximity to a river and scenic natural areas, and a range of outdoor activities for residents and visitors to enjoy.