Clayton, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Clayton, a city in Clayton County, Iowa.
Overnight
64°F
Mostly Cloudy
Mostly cloudy, with a low around 64. South wind around 7 mph.
7-day forecast for Clayton
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 64°F | Mostly Cloudy | 7 mph S | 0% |
| Tuesday | 80°F | Chance Showers And Thunderstorms | 8 mph SW | 52% |
| Tuesday Night | 62°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 6 mph NW | 68% |
| Wednesday | 75°F | Chance Showers And Thunderstorms then Partly Sunny | 5 mph NW | 26% |
| Wednesday Night | 56°F | Partly Cloudy | 0 to 3 mph W | 9% |
| Thursday | 79°F | Sunny | 2 mph SE | 4% |
| Thursday Night | 59°F | Mostly Clear | 1 mph S | 0% |
| Friday | 82°F | Sunny | 1 to 7 mph S | 4% |
| Friday Night | 64°F | Mostly Clear | 6 mph S | 10% |
| Saturday | 84°F | Mostly Sunny | 3 to 7 mph SW | 10% |
| Saturday Night | 69°F | Chance Showers And Thunderstorms | 8 mph S | 32% |
| Sunday | 86°F | Chance Showers And Thunderstorms | 9 mph SW | 32% |
| Sunday Night | 68°F | Chance Showers And Thunderstorms | 3 to 8 mph S | 42% |
| Monday | 84°F | Chance Showers And Thunderstorms | 7 mph S | 42% |
Forecast source: National Weather Service (api.weather.gov) for Clayton (42.902, -91.149). Updated through the day.
Growing snapshot for Clayton
Last spring frost
Apr 21
First fall frost
Oct 18
Growing season
178 days
Hardiness zone
5a
More local growing data for Clayton: nearby ZIP 52049 weather · frost dates · planting calendar · Iowa frost dates
Nearby towns & communities
Colesburg
Edgewood
Elkader
Elkport
Farmersburg
Garber
Garnavillo
Guttenberg
Luana
Marquette
McGregor
North Buena Vista
Osterdock
St. Olaf
Strawberry Point
Volga
Climate data from the nearest NOAA station, Guttenberg L&D 10, Ia (8.7 mi from Clayton). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.