St. Anthony, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for St. Anthony, a city in Marshall County, Iowa.
Overnight
68°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 2am, then showers and thunderstorms likely between 2am and 3am, then a chance of showers and thunderstorms between 3am and 4am, then showers and thunderstorms likely. Mostly cloudy, with a low around 68. South southeast wind around 8 mph. Chance of precipitation is 60%. New rainfall amounts between a half and three quarters of an inch possible.
7-day forecast for St. Anthony
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 68°F | Chance Showers And Thunderstorms | 8 mph SSE | 62% |
| Saturday | 79°F | Chance Showers And Thunderstorms | 8 mph WSW | 52% |
| Saturday Night | 61°F | Chance Showers And Thunderstorms | 7 to 10 mph N | 33% |
| Sunday | 66°F | Chance Rain Showers | 13 mph NE | 48% |
| Sunday Night | 56°F | Chance Rain Showers | 12 mph ENE | 39% |
| Monday | 61°F | Rain Showers Likely | 13 mph ENE | 61% |
| Monday Night | 51°F | Rain Showers Likely | 7 to 10 mph NE | 61% |
| Tuesday | 60°F | Slight Chance Rain Showers then Partly Sunny | 8 mph ENE | 23% |
| Tuesday Night | 47°F | Partly Cloudy | 2 to 6 mph ENE | 3% |
| Wednesday | 64°F | Sunny | 5 mph E | 1% |
| Wednesday Night | 51°F | Partly Cloudy | 2 mph ESE | 4% |
| Thursday | 67°F | Partly Sunny | 3 mph SE | 14% |
| Thursday Night | 54°F | Mostly Cloudy | 1 mph ESE | 9% |
| Friday | 67°F | Mostly Sunny | 1 to 5 mph E | 9% |
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 Sep 19, 2026.