Deep River, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Deep River, a city in Poweshiek County, Iowa.
Today
82°F
Showers And Thunderstorms Likely
Showers and thunderstorms likely before 4pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 82. South southwest wind 6 to 9 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Deep River
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 82°F | Showers And Thunderstorms Likely | 6 to 9 mph SSW | 56% |
| Tonight | 62°F | Showers And Thunderstorms Likely | 5 to 9 mph NNW | 64% |
| Sunday | 67°F | Chance Rain Showers | 8 to 13 mph NNE | 58% |
| Sunday Night | 56°F | Rain Showers Likely | 14 mph NE | 56% |
| Monday | 62°F | Rain Showers Likely | 14 mph NE | 56% |
| Monday Night | 50°F | Chance Rain Showers | 8 to 12 mph NE | 51% |
| Tuesday | 60°F | Chance Rain Showers then Partly Sunny | 10 mph NE | 29% |
| Tuesday Night | 45°F | Mostly Clear | 7 mph NE | 4% |
| Wednesday | 64°F | Sunny | 6 mph NE | 0% |
| Wednesday Night | 50°F | Partly Cloudy | 5 mph ENE | 2% |
| Thursday | 66°F | Partly Sunny | 5 mph E | 9% |
| Thursday Night | 53°F | Partly Cloudy | 2 mph E | 6% |
| Friday | 68°F | Partly Sunny | 6 mph E | 6% |
| Friday Night | 54°F | Partly Cloudy | 3 mph E | 9% |
Forecast source: National Weather Service (api.weather.gov) for Deep River (41.582, -92.373). Updated through the day.
Growing snapshot for Deep River
Last spring frost
Apr 24
First fall frost
Oct 15
Growing season
172 days
Hardiness zone
5b
More local growing data for Deep River: nearby ZIP 52222 weather · frost dates · planting calendar · Iowa frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Sigourney, Ia (17.5 mi from Deep River). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.