Corydon, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Corydon, a city in Wayne County, Iowa.
This Afternoon
69°F
Chance Rain Showers
A chance of rain showers. Mostly cloudy. High near 69, with temperatures falling to around 62 in the afternoon. South wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Corydon
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 69°F | Chance Rain Showers | 10 mph S | 31% |
| Tonight | 47°F | Chance Rain Showers then Cloudy | 9 to 13 mph WSW | 26% |
| Wednesday | 53°F | Mostly Cloudy | 13 to 16 mph W | 11% |
| Wednesday Night | 42°F | Mostly Cloudy | 10 mph WSW | 4% |
| Thursday | 53°F | Mostly Cloudy then Chance Rain Showers | 7 to 12 mph WNW | 30% |
| Thursday Night | 41°F | Slight Chance Rain Showers then Mostly Cloudy | 8 mph NNW | 17% |
| Friday | 52°F | Partly Sunny | 3 to 8 mph N | 5% |
| Friday Night | 35°F | Partly Cloudy | 2 mph NNW | 0% |
| Saturday | 55°F | Partly Sunny | 0 to 5 mph WSW | 2% |
| Saturday Night | 37°F | Mostly Clear | 1 to 5 mph W | 5% |
| Sunday | 61°F | Sunny | 6 mph W | 4% |
| Sunday Night | 39°F | Mostly Clear | 6 mph SW | 1% |
| Monday | 65°F | Sunny | 6 to 13 mph SW | 0% |
| Monday Night | 42°F | Mostly Clear | 5 mph WNW | 0% |
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 Nov 4, 2026.