St. Donatus, IA Weather & Growing Conditions
Today
83°F
Partly Sunny then Chance Showers And Thunderstorms
A chance of showers and thunderstorms after 1pm. Partly sunny. High near 83, with temperatures falling to around 80 in the afternoon. Southwest wind 5 to 10 mph. Chance of precipitation is 40%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 83°F | Partly Sunny then Chance Showers And Thunderstorms | 5 to 10 mph SW | 35% |
| Tonight | 65°F | 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). 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 Aug 4, 2026.