Climate Summary
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| Postville, Iowa Climate Summary General Climate Humid continental, with warm, humid summers and cold, snowy winters. Temperature • Average Annual Temperature 46.2°F (7.9°C) • Average Summer Temperature (June-August) 72.0°F (22.2°C) • Average Winter Temperature (December-February) 22.3°F (-5.4°C) • Record High Temperature 108°F (42.2°C) • Record Low Temperature -37°F (-38.3°C) Precipitation • Average Annual Precipitation 32.6 inches (828 mm) • Average Snowfall 29.6 inches (752 mm) • Wettest Month May (4.6 inches) • Driest Month February (1.3 inches) Wind • Average Wind Speed 10.6 mph (17.1 km/h) • Prevailing Wind Direction West-northwest Humidity • Average Relative Humidity 74% • Highest Relative Humidity July (80%) • Lowest Relative Humidity January (68%) Sunshine • Average Annual Sunshine 2,429 hours • Sunniest Month July (310 hours) • Cloudiest Month December (150 hours) Other Notable Climate Features • Tornado Risk Moderate • Hail Risk High • Severe Thunderstorm Risk High • Extreme Heat Risk Moderate • Extreme Cold Risk High Climate Trends • Rising Temperatures Average temperatures have increased by about 1.5°F (0.8°C) since the late 19th century. • Increasing Precipitation Annual precipitation has increased by about 5% since the late 19th century. • More Extreme Weather The frequency and intensity of extreme weather events, such as tornadoes and hailstorms, is expected to increase in the future. |
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| Facts & Historical Information
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| Natural History • Postville is located in the Driftless Area, a region that escaped glaciation during the last ice age, preserving unique flora and fauna. • The Upper Iowa River meanders through Postville, creating a diverse riparian ecosystem. • The area is home to numerous bird species, including bald eagles, osprey, and kingfishers. Science • In the 1950s, Postville was a hub for the development of hybrid corn. • The town is home to the National Seed Storage Laboratory, which holds the world's largest collection of plant germplasm. • The Postville Meteorite, a 30-pound iron meteorite, crashed near the town in 1931. Personalities Carl Becker (1873-1945):Pulitzer Prize-winning historian born in Postville. John A. Johnson (1861-1909):Swedish-American politician who served as Governor of Minnesota. Norman Borlaug (1914-2009):Nobel Peace Prize-winning agricultural scientist who grew up in Postville. |
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Tourist Attractions
| 1.Effigy Mounds National Monument: Located just 12 miles north of Postville, this park protects over 200 prehistoric Native American burial mounds, some of which are shaped like animals. Visitors can explore the mounds, learn about the cultures that built them, and enjoy hiking trails through the scenic landscape. 2.Decorah Fish Hatchery: This hatchery, located about 25 miles west of Postville, is one of the largest trout hatcheries in the Midwest. Visitors can take a guided tour of the facility, learn about trout farming, and see the fish up close. The hatchery also offers fishing opportunities for a fee. 3.Seed Savers Exchange: Located about 15 miles south of Postville, this non-profit organization works to preserve and promote heirloom plant varieties. Visitors can tour the gardens, learn about seed saving, and purchase a wide variety of seeds. The exchange also hosts educational workshops and events throughout the year. |
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Nearby Cities:| Monona, IA | | Elkader, IA | West Union, IA | | Fayette, IA | Waukon, IA | | Prairie du Chien, WI | Strawberry Point, IA | | Decorah, IA | Madison, WI | | Cedar Rapids, IA | Rochester, MN | | Davenport, IA | Iowa City, IA | | Waterloo, IA | Dubuque, IA | | La Crosse, WI | North La Crosse, WI | | Moline, IL | Cedar Falls, IA | | Rock Island, IL | |
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