Harman US

Dedham, IA Weather & Growing Conditions

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

Overnight
67°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Cloudy. Low around 67, with temperatures rising to around 69 overnight. South southwest wind around 6 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch possible.

7-day forecast for Dedham

WhenTempForecastWindPrecip
Overnight 67°F Chance Showers And Thunderstorms 6 mph SSW 47%
Saturday 78°F Chance Showers And Thunderstorms 7 mph NW 41%
Saturday Night 60°F Chance Showers And Thunderstorms 9 mph N 28%
Sunday 66°F Chance Rain Showers 8 to 12 mph NNE 48%
Sunday Night 55°F Chance Rain Showers 9 mph ENE 48%
Monday 61°F Showers And Thunderstorms Likely 9 mph ENE 72%
Monday Night 51°F Showers And Thunderstorms Likely 3 to 8 mph NE 62%
Tuesday 61°F Mostly Cloudy 7 mph ENE 12%
Tuesday Night 47°F Partly Cloudy 1 to 5 mph E 3%
Wednesday 65°F Mostly Sunny 1 to 5 mph ESE 4%
Wednesday Night 51°F Mostly Cloudy 2 mph ESE 14%
Thursday 67°F Slight Chance Rain Showers 0 to 3 mph SE 23%
Thursday Night 54°F Mostly Cloudy then Slight Chance Rain Showers 2 mph SE 15%
Friday 68°F Slight Chance Rain Showers 1 to 5 mph SE 15%

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

Nearby towns & communities

All Iowa locations ›

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.