St. Anthony, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for St. Anthony, a city in Marshall County, Iowa.
Tonight
46°F
Rain Showers Likely
Rain showers likely. Cloudy. Low around 46, with temperatures rising to around 48 overnight. Northwest wind 6 to 12 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for St. Anthony
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 46°F | Rain Showers Likely | 6 to 12 mph NW | 65% |
| Wednesday | 52°F | Chance Rain Showers | 12 to 15 mph W | 38% |
| Wednesday Night | 42°F | Cloudy then Chance Rain Showers | 12 mph W | 42% |
| Thursday | 52°F | Rain Showers Likely | 10 mph NW | 63% |
| Thursday Night | 39°F | Slight Chance Rain Showers then Mostly Cloudy | 8 mph N | 16% |
| Friday | 51°F | Partly Sunny | 3 to 7 mph N | 3% |
| Friday Night | 32°F | Partly Cloudy | 2 mph NNE | 0% |
| Saturday | 55°F | Mostly Sunny | 0 to 3 mph W | 1% |
| Saturday Night | 36°F | Mostly Clear | 3 mph W | 3% |
| Sunday | 60°F | Sunny | 6 mph W | 5% |
| Sunday Night | 38°F | Mostly Clear | 5 mph SW | 1% |
| Monday | 64°F | Sunny | 5 to 9 mph SW | 0% |
| Monday Night | 40°F | Mostly Clear | 5 mph WNW | 0% |
| Tuesday | 63°F | Mostly Sunny | 5 mph NW | 1% |
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 Nov 4, 2026.