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
83°F
Partly Sunny then Chance Showers And Thunderstorms
A chance of showers and thunderstorms after 4pm. Partly sunny. High near 83, with temperatures falling to around 81 in the afternoon. Southwest wind 5 to 10 mph. Chance of precipitation is 40%.
7-day forecast for St. Donatus
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 83°F | Partly Sunny then Chance Showers And Thunderstorms | 5 to 10 mph SW | 35% |
| Tonight | 65°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 5 mph NW | 83% |
| Wednesday | 75°F | Showers And Thunderstorms Likely | 0 to 5 mph N | 63% |
| Wednesday Night | 59°F | Chance Showers And Thunderstorms | 0 to 5 mph N | 52% |
| Thursday | 79°F | Slight Chance Rain Showers then Mostly Sunny | 0 to 5 mph NE | 24% |
| Thursday Night | 60°F | Mostly Clear | 0 mph | 3% |
| Friday | 82°F | Sunny | 0 to 5 mph SE | 5% |
| Friday Night | 65°F | Mostly Clear | 5 mph S | 8% |
| Saturday | 85°F | Mostly Sunny | 5 mph SW | 10% |
| Saturday Night | 69°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 5 mph S | 24% |
| Sunday | 86°F | Slight Chance Showers And Thunderstorms | 10 mph SW | 24% |
| Sunday Night | 69°F | Chance Showers And Thunderstorms | 5 to 10 mph S | 41% |
| Monday | 85°F | Chance Showers And Thunderstorms | 5 to 10 mph S | 41% |
| Monday Night | 69°F | Chance Showers And Thunderstorms | 5 to 10 mph E | 40% |
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 Aug 4, 2026.