St. Donatus, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for St. Donatus, a city in Jackson County, Iowa.
Today
77°F
Occasional Showers And Thunderstorms then Showers And Thunderstorms
Occasional showers and thunderstorms before 11am, then showers and thunderstorms. Some of the storms could produce heavy rain. Mostly cloudy, with a high near 77. Southeast wind 5 to 10 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
7-day forecast for St. Donatus
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 77°F | Occasional Showers And Thunderstorms then Showers And Thunderstorms | 5 to 10 mph SE | 90% |
| Tonight | 61°F | Showers And Thunderstorms then Chance Showers And Thunderstorms | 5 to 10 mph NW | 80% |
| Sunday | 67°F | Chance Rain Showers | 10 to 15 mph NE | 49% |
| Sunday Night | 55°F | Chance Rain Showers | 10 to 15 mph NE | 33% |
| Monday | 63°F | Chance Rain Showers | 15 mph NE | 33% |
| Monday Night | 50°F | Chance Rain Showers | 10 mph NE | 26% |
| Tuesday | 62°F | Chance Rain Showers then Partly Sunny | 10 mph NE | 26% |
| Tuesday Night | 47°F | Partly Cloudy | 5 to 10 mph NE | 4% |
| Wednesday | 66°F | Mostly Sunny | 5 to 10 mph NE | 2% |
| Wednesday Night | 50°F | Partly Cloudy | 0 to 5 mph NE | 1% |
| Thursday | 67°F | Mostly Sunny | 5 mph NE | 6% |
| Thursday Night | 52°F | Partly Cloudy | 0 to 5 mph NE | 4% |
| Friday | 70°F | Mostly Sunny | 0 to 5 mph NE | 4% |
| Friday Night | 52°F | Partly Cloudy | 0 to 5 mph E | 3% |
Forecast source: National Weather Service (api.weather.gov) for St. Donatus (42.362, -90.542). Updated through the day.
Growing snapshot for St. Donatus
Last spring frost
Apr 26
First fall frost
Oct 15
Growing season
170 days
Hardiness zone
5a
More local growing data for St. Donatus: nearby ZIP 52071 weather · frost dates · planting calendar · Iowa frost dates
Nearby towns & communities
Andrew
Baldwin
Bellevue
La Motte
Maquoketa
Miles
Monmouth
Preston
Sabula
Spragueville
Springbrook
Zwingle
Climate data from the nearest NOAA station, Galena, Il (8.4 mi from St. Donatus). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.