St. Anthony, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for St. Anthony, a city in Marshall County, Iowa.
Today
80°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms after 8am. Mostly cloudy. High near 80, with temperatures falling to around 76 in the afternoon. West northwest wind 5 to 8 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for St. Anthony
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 80°F | Chance Showers And Thunderstorms | 5 to 8 mph WNW | 35% |
| Tonight | 61°F | Showers And Thunderstorms | 5 to 9 mph NNE | 87% |
| Wednesday | 73°F | Chance Showers And Thunderstorms | 6 mph NE | 48% |
| Wednesday Night | 55°F | Slight Chance Rain Showers | 3 mph NE | 20% |
| Thursday | 80°F | Sunny | 2 mph E | 1% |
| Thursday Night | 60°F | Mostly Clear | 2 mph SE | 0% |
| Friday | 83°F | Sunny | 2 to 7 mph SSE | 8% |
| Friday Night | 65°F | Mostly Clear | 6 mph S | 14% |
| Saturday | 87°F | Sunny | 3 to 8 mph S | 14% |
| Saturday Night | 70°F | Mostly Clear then Slight Chance Showers And Thunderstorms | 10 mph SSW | 16% |
| Sunday | 88°F | Slight Chance Showers And Thunderstorms then Mostly Sunny | 10 mph SSE | 16% |
| Sunday Night | 70°F | Chance Showers And Thunderstorms | 8 mph SSE | 34% |
| Monday | 87°F | Chance Showers And Thunderstorms | 10 mph S | 34% |
| Monday Night | 69°F | Partly Cloudy then Chance Showers And Thunderstorms | 10 mph E | 30% |
Forecast source: National Weather Service (api.weather.gov) for St. Anthony (42.124, -93.198). Updated through the day.
Growing snapshot for St. Anthony
Last spring frost
Apr 24
First fall frost
Oct 12
Growing season
170 days
Hardiness zone
5a
More local growing data for St. Anthony: nearby ZIP 50239 weather · frost dates · planting calendar · Iowa frost dates
Nearby towns & communities
Albion
Clemons
Ferguson
Gilman
Green Mountain
Haverhill
Laurel
Le Grand
Liscomb
Marshalltown
Melbourne
Rhodes
State Center
Climate data from the nearest NOAA station, Colo, Ia (10.5 mi from St. Anthony). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.