Deep River, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Deep River, a city in Poweshiek County, Iowa.
This Afternoon
70°F
Showers And Thunderstorms
Showers and thunderstorms. Mostly cloudy. High near 70, with temperatures falling to around 65 in the afternoon. South southeast wind 10 to 15 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 Deep River
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 70°F | Showers And Thunderstorms | 10 to 15 mph SSE | 76% |
| Tonight | 47°F | Chance Rain Showers | 8 to 12 mph SSW | 46% |
| Wednesday | 54°F | Mostly Cloudy then Chance Rain Showers | 15 mph WSW | 29% |
| Wednesday Night | 43°F | Mostly Cloudy | 13 mph WSW | 11% |
| Thursday | 53°F | Chance Rain Showers | 12 mph WNW | 42% |
| Thursday Night | 40°F | Slight Chance Rain Showers then Mostly Cloudy | 8 mph NNW | 18% |
| Friday | 54°F | Partly Sunny | 5 to 9 mph N | 3% |
| Friday Night | 37°F | Mostly Cloudy | 3 mph NNW | 1% |
| Saturday | 55°F | Partly Sunny | 1 to 5 mph W | 2% |
| Saturday Night | 36°F | Partly Cloudy | 5 mph WSW | 4% |
| Sunday | 57°F | Mostly Sunny | 5 to 8 mph WNW | 7% |
| Sunday Night | 36°F | Mostly Clear | 5 mph W | 2% |
| Monday | 60°F | Sunny | 3 to 7 mph SW | 1% |
| Monday Night | 39°F | Mostly Clear | 5 mph W | 1% |
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 Nov 3, 2026.