Dedham, IA Weather & Growing Conditions
Today
78°F
Patchy Fog then Slight Chance Showers And Thunderstorms
Patchy fog and a chance of showers and thunderstorms before 10am, then a slight chance of showers and thunderstorms between 10am and 5pm. Mostly cloudy. High near 78, with temperatures falling to around 74 in the afternoon. North northwest wind around 7 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 78°F | Patchy Fog then Slight Chance Showers And Thunderstorms | 7 mph NNW | 34% |
| Tonight | 60°F | Slight Chance Showers And Thunderstorms | 9 mph N | 28% |
| Sunday | 65°F | Chance Drizzle then Chance Rain Showers | 8 to 12 mph NNE | 51% |
| Sunday Night | 55°F | Chance Rain Showers | 9 mph NE | 46% |
| Monday | 61°F | Rain Showers Likely | 9 mph ENE | 59% |
| Monday Night | 50°F | Chance Rain Showers | 3 to 8 mph ENE | 47% |
| Tuesday | 61°F | Partly Sunny | 3 to 7 mph ENE | 7% |
| Tuesday Night | 45°F | Partly Cloudy | 1 to 5 mph E | 1% |
| Wednesday | 65°F | Mostly Sunny | 1 to 5 mph ESE | 1% |
| Wednesday Night | 50°F | Partly Cloudy | 2 mph SE | 13% |
| Thursday | 66°F | Slight Chance Rain Showers | 1 to 5 mph SE | 19% |
| Thursday Night | 55°F | Mostly Cloudy | 3 mph SE | 10% |
| Friday | 68°F | Mostly Cloudy | 1 to 6 mph ESE | 12% |
| Friday Night | 55°F | Mostly Cloudy | 3 mph SE | 13% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Dedham, IA
Last spring frost
Apr 27
First fall frost
Oct 10
Growing season
166 days
Hardiness zone
5a
Explore more for Dedham, IA: full frost dates · planting calendar · Iowa frost dates
Climate data from the nearest NOAA station, Carroll, Ia (10.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.