Iowa City, IA Weather & Growing Conditions
Overnight
51°F
Mostly Cloudy
Mostly cloudy. Low around 51, with temperatures rising to around 53 overnight. Southwest wind around 10 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 51°F | Mostly Cloudy | 10 mph SW | 10% |
| Wednesday | 52°F | Chance Rain Showers then Mostly Cloudy | 10 to 15 mph W | 30% |
| Wednesday Night | 46°F | Mostly Cloudy then Slight Chance Rain Showers | 10 mph W | 15% |
| Thursday | 54°F | Rain Showers Likely | 10 mph NW | 69% |
| Thursday Night | 42°F | Mostly Cloudy | 5 to 10 mph N | 10% |
| Friday | 50°F | Mostly Sunny | 5 to 10 mph N | 5% |
| Friday Night | 32°F | Mostly Clear | 0 to 5 mph N | 0% |
| Saturday | 51°F | Sunny | 0 to 5 mph NW | 0% |
| Saturday Night | 35°F | Mostly Clear | 0 to 5 mph W | 1% |
| Sunday | 57°F | Sunny | 5 mph W | 2% |
| Sunday Night | 37°F | Clear | 0 to 5 mph SW | 0% |
| Monday | 63°F | Sunny | 0 to 10 mph SW | 0% |
| Monday Night | 41°F | Mostly Clear | 5 mph W | 0% |
| Tuesday | 63°F | Sunny | 5 mph NW | 0% |
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 (3.2 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.