Otranto, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Otranto, a community in Mitchell County, Iowa.
Today
72°F
Showers And Thunderstorms Likely
Showers and thunderstorms likely. Mostly cloudy. High near 72, with temperatures falling to around 69 in the afternoon. Northwest wind 7 to 10 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Otranto
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 72°F | Showers And Thunderstorms Likely | 7 to 10 mph NW | 67% |
| Tonight | 57°F | Showers And Thunderstorms Likely | 2 to 7 mph NW | 67% |
| Wednesday | 74°F | Mostly Sunny | 5 mph N | 1% |
| Wednesday Night | 54°F | Mostly Clear | 0 to 3 mph SW | 0% |
| Thursday | 78°F | Sunny | 1 to 7 mph S | 0% |
| Thursday Night | 60°F | Mostly Clear | 6 mph S | 1% |
| Friday | 81°F | Sunny | 5 to 12 mph S | 11% |
| Friday Night | 64°F | Slight Chance Showers And Thunderstorms | 7 to 10 mph S | 17% |
| Saturday | 82°F | Sunny then Slight Chance Rain Showers | 6 to 10 mph S | 15% |
| Saturday Night | 67°F | Chance Showers And Thunderstorms | 12 mph S | 35% |
| Sunday | 83°F | Chance Showers And Thunderstorms | 10 mph S | 35% |
| Sunday Night | 66°F | Chance Showers And Thunderstorms | 8 mph SE | 34% |
| Monday | 81°F | Chance Rain Showers | 10 mph E | 34% |
| Monday Night | 66°F | Mostly Cloudy then Chance Showers And Thunderstorms | 7 to 10 mph NE | 35% |
Forecast source: National Weather Service (api.weather.gov) for Otranto (43.461, -92.986). Updated through the day.
Growing snapshot for Otranto
Last spring frost
May 4
First fall frost
Oct 4
Growing season
152 days
Hardiness zone
5a
More local growing data for Otranto: nearby ZIP 50426 weather · frost dates · planting calendar · Iowa frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Northwood, Ia (10.6 mi from Otranto). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.