Middletown, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Middletown, a city in Des Moines County, Iowa.
Today
88°F
Mostly Sunny
Mostly sunny, with a high near 88. South wind 5 to 10 mph.
7-day forecast for Middletown
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 88°F | Mostly Sunny | 5 to 10 mph S | 7% |
| Tonight | 68°F | Chance Showers And Thunderstorms | 5 mph NE | 31% |
| Wednesday | 81°F | Showers And Thunderstorms Likely | 5 mph N | 74% |
| Wednesday Night | 63°F | Showers And Thunderstorms | 5 mph N | 82% |
| Thursday | 81°F | Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms | 5 mph NE | 69% |
| Thursday Night | 63°F | Partly Cloudy | 0 to 5 mph E | 9% |
| Friday | 84°F | Mostly Sunny | 0 to 5 mph SE | 6% |
| Friday Night | 66°F | Slight Chance Showers And Thunderstorms | 0 to 5 mph SE | 15% |
| Saturday | 87°F | Slight Chance Showers And Thunderstorms then Sunny | 5 mph S | 15% |
| Saturday Night | 70°F | Mostly Clear | 5 to 10 mph S | 8% |
| Sunday | 89°F | Sunny | 10 to 15 mph SW | 8% |
| Sunday Night | 71°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 10 mph S | 21% |
| Monday | 89°F | Slight Chance Showers And Thunderstorms then Mostly Sunny | 10 mph S | 21% |
| Monday Night | 71°F | Chance Showers And Thunderstorms | 10 mph S | 27% |
Forecast source: National Weather Service (api.weather.gov) for Middletown (40.828, -91.262). Updated through the day.
Growing snapshot for Middletown
Last spring frost
Apr 15
First fall frost
Oct 20
Growing season
187 days
Hardiness zone
6a
More local growing data for Middletown: nearby ZIP 52638 weather · frost dates · planting calendar · Iowa frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Burlington Muni Ap, Ia (6.3 mi from Middletown). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.