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
45°F
Chance Rain Showers
A chance of rain showers. Cloudy. Low around 45, with temperatures rising to around 47 overnight. West northwest wind around 12 mph, with gusts as high as 18 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for St. Anthony
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 45°F | Chance Rain Showers | 12 mph WNW | 29% |
| Wednesday | 51°F | Chance Rain Showers | 15 mph W | 30% |
| Wednesday Night | 43°F | Cloudy then Slight Chance Rain Showers | 13 mph W | 23% |
| Thursday | 54°F | Rain Showers Likely then Mostly Cloudy | 12 mph NW | 62% |
| Thursday Night | 37°F | Mostly Cloudy | 8 mph N | 12% |
| Friday | 49°F | Mostly Sunny | 3 to 7 mph NNE | 4% |
| Friday Night | 29°F | Partly Cloudy | 2 mph N | 0% |
| Saturday | 52°F | Mostly Sunny | 0 to 3 mph SW | 0% |
| Saturday Night | 35°F | Mostly Clear | 3 mph W | 1% |
| Sunday | 58°F | Sunny | 6 mph W | 1% |
| Sunday Night | 36°F | Clear | 3 mph SW | 0% |
| Monday | 64°F | Sunny | 3 to 8 mph SW | 0% |
| Monday Night | 40°F | Mostly Clear | 5 mph WNW | 0% |
| Tuesday | 63°F | Sunny | 3 mph NNW | 0% |
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.