Weather Forecast and Radar for Johnston, Iowa

Weather in Johnston, IA

Johnston, Iowa experiences hot and humid summers, with temperatures ranging from the mid-70s to mid-90s Fahrenheit. During the summer months, thunderstorms and heavy rainfall are common. Winters in Johnston are cold and snowy, with temperatures ranging from the upper-teens to the low-30s Fahrenheit. Snowfall is common during the winter months, and there are occasional ice storms and blizzards. Spring and fall are typically mild and pleasant, with temperatures ranging from the mid-40s to mid-70s Fahrenheit. Rainfall is common during these seasons, and there may be occasional thunderstorms.

Fast Facts About Johnston, IA

As of 2020, the city population is 22077.

Major Cities Nearby Johnston, IA

This map shows the current & 7-day weather forecast, weather alerts, and weather radar for Johnston, Iowa.