Best year time to visit Iowa City

General weather information about Iowa City

Average annual temperature is 11.9 °C

Absolute maximum temperature: 36.6 °C

Absolute minimum temperature: -21.3 °C

Number of sunny days: 204

Number of rainy days: 138

Number of snow days: 23

Average annual precipitation: 715 mm

Look at detailed online map of Iowa City

* Weather data for Iowa City United States is based on climate observations for 2023 year

Iowa City air temperature forecast for each month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Absolute maximum temperature (°C) 13.5 11.9 22.4 26.1 32.1 33.4 34.8 36.6 34.1 30.7 18.3 14.3
Average daytime temperature (°C) 2.5 5.1 8.2 17.4 24.8 29.4 28.8 28.4 26.7 18 10.5 6.8
Average temperature (°C) -2 -0.8 2.7 10.4 18.1 23.3 23.5 23.5 20.7 13.4 5.5 2.8
Average night temperature (°C) -4.8 -5.6 -1.2 4.7 11.8 17.2 18.4 18.9 15.9 9.4 1.2 0
Absolute minimum temperature (°C) -21.3 -20.2 -12.3 -2.7 3.2 9.6 13.1 12.2 11.2 -3.3 -12.2 -7.6

Iowa City monthly weather indicators

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Daylight maximum duration (h) 10 11.2 12.7 14 15 15.2 15.2 14.4 13.2 11.8 10.4 9.4
Daylight mean duration (h) 9.6 10.6 12 13.4 14.5 15.2 14.9 13.8 12.5 11.1 9.9 9.2
Daylight minimum duration (h) 9.2 10.1 11.3 12.7 14 15 14.4 13.2 11.8 10.4 9.4 9.2
Sunshine mean duration (h) 5.4 7.8 7.4 9.5 11.8 12.5 12.4 11.3 9.9 8 7.8 5.5
Precipitation (mm) 58 85 66 30 45 26 79 52 91 90 18 73
Sunny days 14 15 14 19 22 16 16 19 16 16 22 15
Rainy days 7 9 13 11 9 14 15 12 14 15 6 13
Snow days 10 4 4 2 3

Iowa City - weather forecast by months

January February March April May June July August September October November December

Best time to visit Iowa City:

The best time to visit Iowa City during the most sunny months:

  • May — 11.8(h)
  • June — 12.5(h)
  • July — 12.4(h)

The largest precipitation sum in Iowa City is at

  • February — 85(mm)
  • July — 79(mm)
  • September — 91(mm)
  • October — 90(mm)

Weather forecast in the closest to Iowa City admin centers