Clayton, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Clayton, a city in Clayton County, Iowa.
This Afternoon
68°F
Showers And Thunderstorms
Rain showers before 3pm, then showers and thunderstorms. Cloudy. High near 68, with temperatures falling to around 65 in the afternoon. South wind around 13 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Clayton
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 68°F | Showers And Thunderstorms | 13 mph S | 80% |
| Tonight | 52°F | Showers And Thunderstorms | 10 mph S | 91% |
| Wednesday | 55°F | Chance Rain Showers | 9 to 15 mph S | 52% |
| Wednesday Night | 45°F | Rain Showers | 14 mph SW | 77% |
| Thursday | 51°F | Rain Showers | 12 mph NW | 76% |
| Thursday Night | 40°F | Slight Chance Rain Showers then Mostly Cloudy | 10 mph N | 16% |
| Friday | 49°F | Partly Sunny | 3 to 10 mph N | 4% |
| Friday Night | 32°F | Partly Cloudy | 2 mph N | 1% |
| Saturday | 52°F | Mostly Sunny | 0 to 5 mph W | 1% |
| Saturday Night | 35°F | Mostly Clear | 3 mph W | 4% |
| Sunday | 59°F | Sunny | 3 to 8 mph W | 13% |
| Sunday Night | 37°F | Mostly Clear | 1 to 5 mph SW | 3% |
| Monday | 60°F | Sunny | 3 to 12 mph SW | 1% |
| Monday Night | 40°F | Mostly Clear | 6 mph W | 1% |
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
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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 Nov 3, 2026.