Anthon, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Anthon, a city in Woodbury County, Iowa.
Overnight
66°F
Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms before 2am, then patchy fog and a slight chance of showers and thunderstorms between 2am and 5am, then patchy fog and a chance of showers and thunderstorms. Cloudy. Low around 66, with temperatures rising to around 70 overnight. West northwest wind around 0 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Anthon
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 66°F | Slight Chance Showers And Thunderstorms | 0 mph | 26% |
| Saturday | 72°F | Patchy Fog then Mostly Cloudy | 0 to 10 mph NNW | 33% |
| Saturday Night | 58°F | Cloudy | 5 to 10 mph N | 12% |
| Sunday | 65°F | Cloudy then Chance Rain Showers | 5 to 10 mph NE | 32% |
| Sunday Night | 54°F | Chance Rain Showers | 5 to 10 mph ENE | 54% |
| Monday | 59°F | Rain Showers Likely | 5 to 10 mph ENE | 57% |
| Monday Night | 48°F | Chance Rain Showers then Mostly Cloudy | 0 to 5 mph ENE | 41% |
| Tuesday | 61°F | Partly Sunny | 5 mph E | 8% |
| Tuesday Night | 47°F | Partly Cloudy | 0 to 5 mph ESE | 0% |
| Wednesday | 66°F | Mostly Sunny | 0 to 5 mph SE | 5% |
| Wednesday Night | 52°F | Mostly Cloudy then Chance Rain Showers | 0 to 5 mph SE | 26% |
| Thursday | 66°F | Chance Rain Showers | 0 to 5 mph SSE | 29% |
| Thursday Night | 54°F | Slight Chance Rain Showers | 0 to 5 mph SE | 18% |
| Friday | 68°F | Slight Chance Rain Showers then Partly Sunny | 0 to 5 mph SE | 18% |
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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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.