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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

WhenTempForecastWindPrecip
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

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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.