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Dedham, IA Weather & Growing Conditions

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

This Afternoon
75°F
Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms. Mostly cloudy. High near 75, with temperatures falling to around 69 in the afternoon. North wind around 9 mph. Chance of precipitation is 20%.

7-day forecast for Dedham

WhenTempForecastWindPrecip
This Afternoon 75°F Slight Chance Showers And Thunderstorms 9 mph N 23%
Tonight 59°F Chance Showers And Thunderstorms 9 mph N 30%
Sunday 65°F Slight Chance Rain Showers then Chance Drizzle 12 mph NNE 41%
Sunday Night 54°F Rain Showers 7 to 10 mph NE 76%
Monday 59°F Rain Showers 9 mph NE 85%
Monday Night 50°F Rain Showers Likely 3 to 8 mph NE 69%
Tuesday 61°F Partly Sunny 3 to 7 mph NE 8%
Tuesday Night 46°F Partly Cloudy 1 to 5 mph E 1%
Wednesday 65°F Mostly Sunny 1 to 5 mph E 0%
Wednesday Night 51°F Mostly Cloudy then Slight Chance Showers And Thunderstorms 2 mph SE 16%
Thursday 67°F Chance Showers And Thunderstorms 2 to 6 mph SSE 35%
Thursday Night 56°F Chance Rain Showers 3 mph SE 26%
Friday 70°F Slight Chance Rain Showers 1 to 6 mph ESE 19%
Friday Night 58°F Mostly Cloudy then Slight Chance Rain Showers 3 mph ESE 22%

Forecast source: National Weather Service (api.weather.gov) for Dedham (41.908, -94.823). Updated through the day.

Growing snapshot for Dedham

Last spring frost
Apr 27
First fall frost
Oct 10
Growing season
166 days
Hardiness zone
5a

More local growing data for Dedham: nearby ZIP 51440 weather · frost dates · planting calendar · Iowa frost dates

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Climate data from the nearest NOAA station, Carroll, Ia (10.8 mi from Dedham). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.