Iowa City, IA Weather & Growing Conditions
Today
81°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 1pm, then a chance of showers and thunderstorms between 1pm and 4pm, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 81. South wind around 10 mph. Chance of precipitation is 50%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 81°F | Chance Showers And Thunderstorms | 10 mph S | 46% |
| Tonight | 64°F | Chance Showers And Thunderstorms then Showers And Thunderstorms | 5 to 10 mph NW | 83% |
| Sunday | 69°F | Showers And Thunderstorms Likely | 10 to 15 mph NE | 66% |
| Sunday Night | 58°F | Rain Showers Likely | 10 to 15 mph NE | 55% |
| Monday | 63°F | Rain Showers Likely | 15 mph NE | 55% |
| Monday Night | 52°F | Chance Rain Showers | 10 to 15 mph NE | 42% |
| Tuesday | 61°F | Chance Rain Showers | 10 mph NE | 27% |
| Tuesday Night | 48°F | Mostly Clear | 5 to 10 mph NE | 6% |
| Wednesday | 66°F | Sunny | 5 mph NE | 0% |
| Wednesday Night | 52°F | Partly Cloudy | 0 to 5 mph NE | 1% |
| Thursday | 67°F | Mostly Sunny | 5 mph NE | 6% |
| Thursday Night | 55°F | Partly Cloudy | 0 to 5 mph NE | 5% |
| Friday | 70°F | Mostly Sunny | 5 mph E | 6% |
| Friday Night | 55°F | Partly Cloudy | 5 mph E | 7% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Iowa City, IA
Last spring frost
Apr 21
First fall frost
Oct 18
Growing season
180 days
Hardiness zone
5b
Explore more for Iowa City, IA: full frost dates · planting calendar · Iowa frost dates
Climate data from the nearest NOAA station, Iowa City Muni Ap, Ia (3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.