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
86°F
Partly Sunny then Showers And Thunderstorms Likely
Showers and thunderstorms likely after noon. Partly sunny. High near 86, with temperatures falling to around 83 in the afternoon. West northwest wind 3 to 7 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 | 86°F | Partly Sunny then Showers And Thunderstorms Likely | 3 to 7 mph WNW | 60% |
| Tonight | 63°F | Showers And Thunderstorms | 9 mph N | 89% |
| Wednesday | 75°F | Showers And Thunderstorms Likely | 7 mph NNE | 74% |
| Wednesday Night | 57°F | Chance Showers And Thunderstorms | 2 to 6 mph NNE | 49% |
| Thursday | 80°F | Sunny | 3 mph ENE | 13% |
| Thursday Night | 59°F | Mostly Clear | 2 mph ESE | 0% |
| Friday | 84°F | Sunny | 1 to 5 mph SE | 5% |
| Friday Night | 64°F | Slight Chance Showers And Thunderstorms | 6 mph SSE | 15% |
| Saturday | 88°F | Sunny then Slight Chance Rain Showers | 3 to 7 mph S | 15% |
| Saturday Night | 70°F | Slight Chance Rain Showers then Mostly Clear | 7 to 10 mph S | 15% |
| Sunday | 89°F | Mostly Sunny | 10 mph SSW | 14% |
| Sunday Night | 69°F | Chance Showers And Thunderstorms | 9 mph S | 34% |
| Monday | 88°F | Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms | 8 to 12 mph SSW | 34% |
| Monday Night | 70°F | Slight Chance Showers And Thunderstorms | 12 mph ESE | 31% |
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 Aug 4, 2026.