Delaware, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Delaware, a city in Delaware County, Iowa.
This Afternoon
74°F
Showers And Thunderstorms Likely
Showers and thunderstorms likely. Mostly cloudy. High near 74, with temperatures falling to around 72 in the afternoon. South wind around 5 mph. Chance of precipitation is 70%.
7-day forecast for Delaware
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 74°F | Showers And Thunderstorms Likely | 5 mph S | 69% |
| Tonight | 60°F | Showers And Thunderstorms Likely | 5 to 10 mph NE | 67% |
| Sunday | 66°F | Chance Rain Showers | 15 mph NE | 40% |
| Sunday Night | 53°F | Chance Rain Showers | 10 to 15 mph NE | 36% |
| Monday | 61°F | Rain Showers Likely | 15 mph NE | 64% |
| Monday Night | 49°F | Rain Showers Likely | 10 to 15 mph NE | 64% |
| Tuesday | 61°F | Chance Rain Showers | 10 to 15 mph NE | 46% |
| Tuesday Night | 47°F | Partly Cloudy | 5 to 10 mph NE | 7% |
| Wednesday | 64°F | Mostly Sunny | 5 to 10 mph NE | 1% |
| Wednesday Night | 50°F | Partly Cloudy | 5 mph NE | 2% |
| Thursday | 66°F | Partly Sunny | 5 mph E | 9% |
| Thursday Night | 54°F | Slight Chance Rain Showers | 0 mph | 15% |
| Friday | 69°F | Partly Sunny | 5 mph E | 11% |
| Friday Night | 55°F | Mostly Cloudy | 0 to 5 mph E | 8% |
Forecast source: National Weather Service (api.weather.gov) for Delaware (42.472, -91.338). Updated through the day.
Growing snapshot for Delaware
Last spring frost
May 3
First fall frost
Oct 4
Growing season
154 days
Hardiness zone
4b
More local growing data for Delaware: nearby ZIP 52036 weather · frost dates · planting calendar · Iowa frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Manchester #2, Ia (5.6 mi from Delaware). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.