St. Donatus, IA Weather & Growing Conditions
Today
54°F
Slight Chance Rain Showers
A slight chance of rain showers. Cloudy, with a high near 54. Southwest wind 10 to 15 mph. Chance of precipitation is 20%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 54°F | Slight Chance Rain Showers | 10 to 15 mph SW | 24% |
| Tonight | 46°F | Chance Rain Showers | 10 to 15 mph SW | 29% |
| Thursday | 50°F | Chance Rain Showers | 10 mph NW | 35% |
| 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% |
| Tuesday Night | 39°F | Partly Cloudy | 0 mph | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for St. Donatus, IA
Last spring frost
Apr 26
First fall frost
Oct 15
Growing season
170 days
Hardiness zone
5a
Explore more for St. Donatus, IA: full frost dates · planting calendar · Iowa frost dates
Climate data from the nearest NOAA station, Galena, Il (8.4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.