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
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| 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
Nearby towns & communities
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.