Deep River, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Deep River, a city in Poweshiek County, Iowa.
Overnight
67°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 5am, then showers and thunderstorms likely. Mostly cloudy, with a low around 67. Southeast wind 7 to 10 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast for Deep River
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 67°F | Chance Showers And Thunderstorms | 7 to 10 mph SE | 55% |
| Saturday | 82°F | Chance Showers And Thunderstorms | 9 mph SSW | 50% |
| Saturday Night | 62°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 5 to 9 mph NNW | 64% |
| Sunday | 68°F | Showers And Thunderstorms Likely | 8 to 13 mph NNE | 68% |
| Sunday Night | 56°F | Showers And Thunderstorms Likely | 13 mph NE | 61% |
| Monday | 61°F | Rain Showers Likely | 14 mph ENE | 60% |
| Monday Night | 51°F | Rain Showers Likely | 12 mph NE | 60% |
| Tuesday | 60°F | Slight Chance Rain Showers then Mostly Cloudy | 7 to 10 mph NE | 23% |
| Tuesday Night | 47°F | Partly Cloudy | 7 mph NE | 6% |
| Wednesday | 65°F | Mostly Sunny | 6 mph NE | 1% |
| Wednesday Night | 51°F | Partly Cloudy | 3 mph ENE | 3% |
| Thursday | 67°F | Partly Sunny | 5 mph E | 10% |
| Thursday Night | 53°F | Partly Cloudy | 2 mph E | 8% |
| Friday | 68°F | Mostly Sunny | 5 mph ENE | 8% |
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.