Blakesburg, Iowa has a humid continental climate with cold winters and warm summers. The area receives an average of 35 inches of precipitation per year, with most falling in the summer months. The hydrology of the area consists of small streams and creeks that flow into nearby lakes and reservoirs. Outdoor recreation opportunities in Blakesburg include fishing and boating on the nearby Lake Belva Deer and hiking and camping in the surrounding state parks. The area is also known for its annual Antique Airfield Fly-In, which attracts aviation enthusiasts from around the country.