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
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| 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
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.