Iowa lies in the humid continental zone and generally has hot summers, cold winters, and wet springs. Temperatures vary widely during the year, with an annual average of 49°F (9°C). The state averages 166 days of full sunshine and 199 cloudy or partly cloudy days. On average, a normal daily maximum temperature is 86°F (30°C) in July and a normal daily minimum is 10°F (–4°C) in January. Annual precipitation averages 34.7 in (88 cm) annually, snowfall averages 30 in (76 cm) annually, and relative humidity averages 72%.

Iowa has four distinct seasons:
Fall (mid-September to mid-December) is cool and rainy
Winter (mid-December to mid-March) is cold, windy, with snow and ice
Spring (mid-March to late May) could be rainy and stormy or sunny; mix of cool, warm, and hot temperatures
Summer (June to mid-September) is hot and humid with thunderstorms

It is important to dress appropriately in the winter: several layers of clothes, heavy coat, hat/cap, gloves/mittens, scarf, and insulated boots with textured soles.  Avoid walking on ice.  Do not travel during blizzards.  More tips at and current  weather at  
Windchill Advisory/Warning: This announcement means that the temperature poses a danger to exposed skin, which could cause redness or frost bite in a few minutes. Special precautions should be taken to cover hands, head, face, and feet when outside.

To convert from Celsius to Fahrenheit, multiply by 9/5 and add 32.  To convert from Farenheit to Celsius, subtract 32 and multuply by 5/9.

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