Dedham, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Dedham, a city in Carroll County, Iowa.
Tonight
42°F
Rain Showers
Rain showers. Cloudy. Low around 42, with temperatures rising to around 45 overnight. Northwest wind around 14 mph, with gusts as high as 24 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Dedham
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 42°F | Rain Showers | 14 mph NW | 84% |
| Wednesday | 49°F | Chance Rain Showers | 15 mph WNW | 32% |
| Wednesday Night | 40°F | Cloudy then Rain Showers Likely | 8 to 12 mph WNW | 57% |
| Thursday | 51°F | Rain Showers Likely | 10 mph NW | 56% |
| Thursday Night | 37°F | Mostly Cloudy | 3 to 8 mph N | 9% |
| Friday | 52°F | Partly Sunny | 1 to 5 mph N | 2% |
| Friday Night | 33°F | Mostly Cloudy | 1 mph NW | 0% |
| Saturday | 57°F | Mostly Sunny | 0 to 5 mph WSW | 2% |
| Saturday Night | 37°F | Mostly Clear | 3 mph W | 4% |
| Sunday | 62°F | Sunny | 6 mph WSW | 6% |
| Sunday Night | 40°F | Mostly Clear | 6 mph SW | 1% |
| Monday | 65°F | Sunny | 6 to 10 mph WSW | 0% |
| Monday Night | 41°F | Mostly Clear | 5 mph WNW | 0% |
| Tuesday | 63°F | Mostly Sunny | 2 to 6 mph W | 0% |
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 Nov 4, 2026.