Corydon, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Corydon, a city in Wayne County, Iowa.
Overnight
65°F
Partly Cloudy
Partly cloudy, with a low around 65. South wind around 6 mph.
7-day forecast for Corydon
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 65°F | Partly Cloudy | 6 mph S | 1% |
| Tuesday | 88°F | Partly Sunny then Slight Chance Showers And Thunderstorms | 3 to 7 mph SSW | 16% |
| Tuesday Night | 65°F | Showers And Thunderstorms Likely | 8 mph NNE | 68% |
| Wednesday | 76°F | Chance Showers And Thunderstorms | 8 mph NE | 90% |
| Wednesday Night | 60°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 3 to 9 mph NE | 62% |
| Thursday | 81°F | Chance Showers And Thunderstorms then Mostly Sunny | 3 mph NE | 41% |
| Thursday Night | 62°F | Mostly Clear | 2 mph ESE | 3% |
| Friday | 86°F | Sunny | 2 to 6 mph S | 6% |
| Friday Night | 67°F | Mostly Clear | 5 mph S | 13% |
| Saturday | 89°F | Sunny | 5 to 12 mph SSW | 8% |
| Saturday Night | 72°F | Mostly Clear | 15 mph SSW | 8% |
| Sunday | 91°F | Sunny | 14 to 17 mph SSW | 8% |
| Sunday Night | 72°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 13 to 16 mph SSW | 18% |
| Monday | 92°F | Slight Chance Showers And Thunderstorms then Mostly Sunny | 14 to 20 mph SSW | 18% |
Forecast source: National Weather Service (api.weather.gov) for Corydon (40.758, -93.318). Updated through the day.
Growing snapshot for Corydon
Last spring frost
Apr 21
First fall frost
Oct 19
Growing season
178 days
Hardiness zone
5b
More local growing data for Corydon: nearby ZIP 50060 weather · frost dates · planting calendar · Iowa frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Allerton, Ia (4.4 mi from Corydon). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.