Clinton, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Clinton, a city in Clinton County, Iowa.
Today
86°F
Mostly Sunny then Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms after 5pm. Mostly sunny, with a high near 86. Southwest wind 5 to 10 mph. Chance of precipitation is 20%.
7-day forecast for Clinton
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 86°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 5 to 10 mph SW | 18% |
| Tonight | 67°F | Showers And Thunderstorms Likely | 5 mph NW | 88% |
| Wednesday | 77°F | Showers And Thunderstorms Likely | 5 mph N | 72% |
| Wednesday Night | 61°F | Showers And Thunderstorms Likely | 0 to 5 mph N | 70% |
| Thursday | 80°F | Chance Rain Showers then Mostly Sunny | 5 mph NE | 37% |
| Thursday Night | 61°F | Mostly Clear | 0 mph | 6% |
| Friday | 82°F | Mostly Sunny | 0 to 5 mph SE | 4% |
| Friday Night | 64°F | Mostly Clear | 0 to 5 mph S | 8% |
| Saturday | 86°F | Sunny | 5 to 10 mph SW | 11% |
| Saturday Night | 70°F | Mostly Clear then Slight Chance Showers And Thunderstorms | 5 to 10 mph S | 20% |
| Sunday | 87°F | Slight Chance Showers And Thunderstorms then Mostly Sunny | 10 mph SW | 20% |
| Sunday Night | 70°F | Chance Showers And Thunderstorms | 5 to 10 mph S | 38% |
| Monday | 86°F | Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms | 5 to 10 mph S | 38% |
| Monday Night | 70°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 5 to 10 mph SW | 37% |
Forecast source: National Weather Service (api.weather.gov) for Clinton (41.842, -90.243). Updated through the day.
Growing snapshot for Clinton
Last spring frost
Apr 13
First fall frost
Oct 26
Growing season
195 days
Hardiness zone
5b
More local growing data for Clinton: nearby ZIP 52732 weather · frost dates · planting calendar · Iowa frost dates
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Welton
Wheatland
Climate data from the nearest NOAA station, Fulton L&D #13, Il (5.1 mi from Clinton). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.