Coralville, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Coralville, a city in Johnson County, Iowa.
This Afternoon
81°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 4pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 81. Southwest wind around 10 mph. Chance of precipitation is 50%.
7-day forecast for Coralville
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 81°F | Chance Showers And Thunderstorms | 10 mph SW | 47% |
| Tonight | 64°F | Chance Showers And Thunderstorms then Showers And Thunderstorms | 5 to 10 mph NW | 81% |
| Sunday | 68°F | Showers And Thunderstorms Likely | 10 to 15 mph NE | 65% |
| Sunday Night | 57°F | Chance Rain Showers | 10 to 15 mph NE | 54% |
| Monday | 63°F | Rain Showers Likely | 15 mph NE | 55% |
| Monday Night | 52°F | Chance Rain Showers | 10 mph NE | 43% |
| Tuesday | 61°F | Chance Rain Showers then Partly Sunny | 10 mph NE | 26% |
| 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 | 7% |
| 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) for Coralville (41.699, -91.597). Updated through the day.
Growing snapshot for Coralville
Last spring frost
Apr 21
First fall frost
Oct 18
Growing season
180 days
Hardiness zone
5b
More local growing data for Coralville: nearby ZIP 52241 weather · frost dates · planting calendar · Iowa frost dates
Nearby towns & communities
Frytown
Hills
Iowa City
Kalona
Lone Tree
North Liberty
Oxford
Shueyville
Solon
Swisher
Tiffin
University Heights
Climate data from the nearest NOAA station, Iowa City Muni Ap, Ia (5.3 mi from Coralville). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.