Dedham, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Dedham, a city in Carroll County, Iowa.
Overnight
64°F
Mostly Cloudy
Mostly cloudy. Low around 64, with temperatures rising to around 67 overnight. Southwest wind around 6 mph. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Dedham
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 64°F | Mostly Cloudy | 6 mph SW | 14% |
| Tuesday | 78°F | Chance Showers And Thunderstorms | 6 to 10 mph NNW | 38% |
| Tuesday Night | 59°F | Showers And Thunderstorms | 2 to 9 mph NNE | 84% |
| Wednesday | 73°F | Chance Showers And Thunderstorms | 2 to 6 mph ENE | 34% |
| Wednesday Night | 55°F | Mostly Clear | 0 to 5 mph E | 5% |
| Thursday | 81°F | Sunny | 0 to 5 mph ESE | 1% |
| Thursday Night | 61°F | Mostly Clear | 5 mph SSE | 3% |
| Friday | 86°F | Sunny | 3 to 8 mph S | 4% |
| Friday Night | 67°F | Mostly Clear | 7 mph S | 9% |
| Saturday | 90°F | Sunny | 3 to 12 mph S | 7% |
| Saturday Night | 71°F | Mostly Clear | 13 mph S | 14% |
| Sunday | 90°F | Mostly Sunny | 12 mph S | 14% |
| Sunday Night | 70°F | Chance Showers And Thunderstorms | 12 mph SSE | 29% |
| Monday | 90°F | Chance Showers And Thunderstorms then Mostly Sunny | 13 mph S | 29% |
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 Aug 4, 2026.