Middletown, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Middletown, a city in Des Moines County, Iowa.
Tonight
50°F
Rain Showers Likely
Rain showers likely before 4am. Mostly cloudy. Low around 50, with temperatures rising to around 52 overnight. South wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%.
7-day forecast for Middletown
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 50°F | Rain Showers Likely | 10 to 15 mph S | 58% |
| Wednesday | 55°F | Slight Chance Rain Showers | 15 mph SW | 21% |
| Wednesday Night | 45°F | Mostly Cloudy | 10 mph SW | 6% |
| Thursday | 54°F | Mostly Cloudy then Slight Chance Rain Showers | 10 mph W | 22% |
| Thursday Night | 43°F | Chance Rain Showers | 5 to 10 mph NW | 30% |
| Friday | 52°F | Partly Sunny | 5 to 10 mph N | 11% |
| Friday Night | 36°F | Partly Cloudy | 0 to 5 mph N | 0% |
| Saturday | 53°F | Mostly Sunny | 0 to 5 mph W | 2% |
| Saturday Night | 37°F | Mostly Clear | 0 to 5 mph W | 3% |
| Sunday | 59°F | Sunny | 5 mph W | 9% |
| Sunday Night | 37°F | Mostly Clear | 5 mph W | 3% |
| Monday | 63°F | Sunny | 5 to 10 mph SW | 0% |
| Monday Night | 42°F | Mostly Clear | 5 mph W | 0% |
| Tuesday | 64°F | Sunny | 5 mph NW | 0% |
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 Nov 4, 2026.