Anthon, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Anthon, a city in Woodbury County, Iowa.
This Afternoon
69°F
Mostly Cloudy
Mostly cloudy, with a high near 69. North wind 5 to 10 mph.
7-day forecast for Anthon
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 69°F | Mostly Cloudy | 5 to 10 mph N | 8% |
| Tonight | 57°F | Mostly Cloudy | 5 to 10 mph NNE | 9% |
| Sunday | 63°F | Chance Rain Showers | 5 to 10 mph NE | 42% |
| Sunday Night | 52°F | Rain Showers | 5 to 10 mph NE | 82% |
| Monday | 57°F | Rain Showers | 5 to 10 mph NE | 82% |
| Monday Night | 48°F | Chance Rain Showers then Mostly Cloudy | 0 to 5 mph NE | 40% |
| Tuesday | 62°F | Partly Sunny | 5 mph ENE | 4% |
| Tuesday Night | 45°F | Partly Cloudy | 0 to 5 mph E | 1% |
| Wednesday | 64°F | Mostly Sunny | 0 to 5 mph SE | 2% |
| Wednesday Night | 51°F | Mostly Cloudy then Chance Showers And Thunderstorms | 5 mph SE | 33% |
| Thursday | 67°F | Chance Showers And Thunderstorms | 5 to 10 mph SSE | 41% |
| Thursday Night | 56°F | Slight Chance Rain Showers | 0 to 5 mph SE | 20% |
| Friday | 70°F | Slight Chance Rain Showers | 0 to 5 mph ESE | 16% |
| Friday Night | 58°F | Mostly Cloudy then Chance Rain Showers | 5 mph SE | 28% |
Forecast source: National Weather Service (api.weather.gov) for Anthon (42.388, -95.866). Updated through the day.
Growing snapshot for Anthon
Last spring frost
May 3
First fall frost
Oct 1
Growing season
151 days
Hardiness zone
5a
More local growing data for Anthon: nearby ZIP 51004 weather · frost dates · planting calendar · Iowa frost dates
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Sioux City
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Smithland
Climate data from the nearest NOAA station, Mapleton No.2, Ia (16.6 mi from Anthon). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.