St. Anthony, IA Weather & Growing Conditions
Tonight
46°F
Rain Showers Likely
Rain showers likely. Cloudy. Low around 46, with temperatures rising to around 48 overnight. West northwest wind 7 to 10 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 46°F | Rain Showers Likely | 7 to 10 mph WNW | 65% |
| Wednesday | 52°F | Chance Rain Showers | 12 to 16 mph W | 39% |
| Wednesday Night | 42°F | Cloudy then Chance Rain Showers | 12 mph W | 43% |
| Thursday | 52°F | Rain Showers Likely | 10 mph NW | 63% |
| Thursday Night | 38°F | Slight Chance Rain Showers then Mostly Cloudy | 8 mph N | 17% |
| 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 | 6% |
| Sunday Night | 37°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 | 62°F | Mostly Sunny | 5 mph NW | 1% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for St. Anthony, IA
Last spring frost
Apr 24
First fall frost
Oct 12
Growing season
170 days
Hardiness zone
5a
Explore more for St. Anthony, IA: full frost dates · planting calendar · Iowa frost dates
Climate data from the nearest NOAA station, Colo, Ia (10.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.