Historical weather data, all-time temperature records, and monthly climate averages for Iowa City, IA. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 5 in Iowa City sits in that classic transition zone — expect a high around 58° and a low near 34°, with about a 1-in-3 chance of rain. The date has swung wildly in the past, from a balmy 83° in 2000 to a bitter 20° low in 2002, so don't put the layers away just yet.
Iowa City plays for keeps when it comes to extremes — the thermometer has hit 105° in the July 2012 heat and bottomed out at -34° in February 1996, a swing of 139 degrees. On the wet side, a single June day in 2007 dropped 5.65 inches of rain, and an early spring storm in 1951 buried the city under 11.7 inches of snow in one day.
Summer is the star here, with highs hovering around 85-86° in mid-July and the wettest stretch of the year falling in late June. If you're looking to avoid the cold, steer clear of January — average highs barely crack 31°. Spring and fall offer a pleasant middle ground, with April averaging 62° and October coming in at 64°.