Iowa City has a humid continental climate with distinct four seasons.

Summers are hot and humid, while winters are cold and snowy.

  • Average temperature in January: High of -1°C, Low of -10°C
  • Average temperature in July: High of 29°C, Low of 18°C
  • The hottest month of the year is July, and the coldest month is January.

Precipitation

The annual precipitation in Iowa City is about 963mm.

  • Rainfall is concentrated in spring and early summer (especially May to June).
  • The wettest month is June, and the driest month is January.

Natural Disasters

Iowa City faces several natural disaster risks:

  1. Tornadoes

    • Tornadoes can occur in late spring and early summer.
    • May and June are particularly critical times.

  2. Flooding

    • Flooding can occur around the Iowa River due to heavy rainfall and snowmelt.
    • In 2008, a record flood caused significant damage.

  3. Winter Snowstorms

    • In winter, snowstorms and extreme cold frequently occur, often leading to icy roads.

Iowa City has a typical Midwestern climate with distinct seasonal changes. Summers are hot and humid, while winters are characterized by cold weather and frequent snow.

Precipitation is high in late spring and early summer, and attention should be paid to tornadoes, flooding, and heavy snowfall as natural disasters.