Harman US

Corwith, IA Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Corwith, a city in Hancock County, Iowa.

This Afternoon
68°F
Patchy Fog
Patchy fog and a slight chance of showers and thunderstorms before 4pm. Cloudy. High near 68, with temperatures falling to around 66 in the afternoon. North wind 6 to 9 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.

7-day forecast for Corwith

WhenTempForecastWindPrecip
This Afternoon 68°F Patchy Fog 6 to 9 mph N 18%
Tonight 57°F Cloudy 13 mph NNE 13%
Sunday 66°F Slight Chance Drizzle 15 mph NE 19%
Sunday Night 52°F Chance Drizzle then Chance Rain Showers 13 mph ENE 44%
Monday 61°F Chance Rain Showers 9 to 13 mph ENE 47%
Monday Night 47°F Chance Rain Showers then Mostly Cloudy 6 to 9 mph ENE 35%
Tuesday 61°F Mostly Sunny 8 mph ENE 9%
Tuesday Night 43°F Mostly Clear 2 to 6 mph E 0%
Wednesday 65°F Sunny 5 mph ESE 1%
Wednesday Night 48°F Partly Cloudy then Slight Chance Rain Showers 3 mph SE 15%
Thursday 66°F Slight Chance Rain Showers then Partly Sunny 6 mph SE 15%
Thursday Night 51°F Mostly Cloudy 3 mph SE 6%
Friday 69°F Partly Sunny 3 to 7 mph SE 6%
Friday Night 53°F Mostly Cloudy 5 mph SE 12%

Forecast source: National Weather Service (api.weather.gov) for Corwith (42.989, -93.958). Updated through the day.

Growing snapshot for Corwith

Last spring frost
Apr 29
First fall frost
Oct 7
Growing season
161 days
Hardiness zone
5a

More local growing data for Corwith: nearby ZIP 50430 weather · frost dates · planting calendar · Iowa frost dates

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Climate data from the nearest NOAA station, Britt 3E, Ia (13.9 mi from Corwith). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.