St. Donatus, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for St. Donatus, a city in Jackson County, Iowa.
Overnight
52°F
Slight Chance Rain Showers
A slight chance of rain showers after 5am. Mostly cloudy. Low around 52, with temperatures rising to around 56 overnight. South wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
7-day forecast for St. Donatus
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 52°F | Slight Chance Rain Showers | 10 mph S | 23% |
| Wednesday | 54°F | Chance Rain Showers | 10 to 15 mph SW | 40% |
| Wednesday Night | 45°F | Chance Rain Showers | 10 to 15 mph SW | 30% |
| Thursday | 53°F | Rain Showers Likely | 10 mph W | 60% |
| Thursday Night | 39°F | Mostly Cloudy | 10 mph N | 14% |
| Friday | 48°F | Partly Sunny | 5 to 10 mph N | 1% |
| Friday Night | 30°F | Mostly Clear | 0 to 5 mph N | 1% |
| Saturday | 50°F | Sunny | 0 to 5 mph NW | 0% |
| Saturday Night | 34°F | Mostly Clear | 5 mph W | 2% |
| Sunday | 55°F | Sunny | 5 mph W | 3% |
| Sunday Night | 35°F | Clear | 0 to 5 mph W | 0% |
| Monday | 60°F | Sunny | 0 to 10 mph SW | 0% |
| Monday Night | 40°F | Mostly Clear | 5 mph W | 0% |
| Tuesday | 60°F | Sunny | 0 to 5 mph NW | 0% |
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 Nov 4, 2026.