Ryan, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Ryan, a city in Delaware County, Iowa.
Tonight
65°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 1am, then showers and thunderstorms. Mostly cloudy. Low around 65, with temperatures rising to around 67 overnight. Southeast wind 10 to 15 mph. Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.
7-day forecast for Ryan
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 65°F | Chance Showers And Thunderstorms | 10 to 15 mph SE | 87% |
| Saturday | 79°F | Showers And Thunderstorms | 5 to 10 mph S | 88% |
| Saturday Night | 61°F | Showers And Thunderstorms Likely | 10 mph N | 67% |
| Sunday | 67°F | Chance Rain Showers | 15 mph NE | 54% |
| Sunday Night | 54°F | Chance Rain Showers | 15 mph NE | 26% |
| Monday | 63°F | Chance Rain Showers | 15 mph NE | 51% |
| Monday Night | 50°F | Chance Rain Showers | 10 to 15 mph NE | 51% |
| Tuesday | 61°F | Chance Rain Showers | 10 to 15 mph NE | 38% |
| Tuesday Night | 47°F | Partly Cloudy | 5 to 10 mph NE | 6% |
| Wednesday | 65°F | Mostly Sunny | 5 mph NE | 1% |
| Wednesday Night | 50°F | Partly Cloudy | 5 mph E | 3% |
| Thursday | 67°F | Mostly Sunny | 5 mph E | 8% |
| Thursday Night | 53°F | Partly Cloudy | 0 to 5 mph E | 7% |
| Friday | 69°F | Mostly Sunny | 5 mph NE | 4% |
Forecast source: National Weather Service (api.weather.gov) for Ryan (42.352, -91.485). Updated through the day.
Growing snapshot for Ryan
Last spring frost
May 3
First fall frost
Oct 7
Growing season
156 days
Hardiness zone
5a
More local growing data for Ryan: nearby ZIP 52330 weather · frost dates · planting calendar · Iowa frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Coggon, Ia (5.2 mi from Ryan). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.