Delaware, OH Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Delaware, a city in Delaware County, Ohio.
Today
81°F
Mostly Cloudy then Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms between 3pm and 4pm, then a chance of showers and thunderstorms between 4pm and 5pm, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 81. Southeast wind around 8 mph. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Delaware
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 81°F | Mostly Cloudy then Slight Chance Showers And Thunderstorms | 8 mph SE | 39% |
| Tonight | 66°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 7 mph S | 71% |
| Sunday | 80°F | Showers And Thunderstorms Likely | 5 to 12 mph W | 77% |
| Sunday Night | 56°F | Showers And Thunderstorms Likely | 12 mph NE | 72% |
| Monday | 69°F | Chance Rain Showers | 10 to 14 mph NE | 36% |
| Monday Night | 53°F | Chance Rain Showers | 10 to 14 mph NE | 33% |
| Tuesday | 69°F | Chance Rain Showers | 13 mph NE | 30% |
| Tuesday Night | 55°F | Rain Showers Likely | 14 mph E | 63% |
| Wednesday | 68°F | Rain Showers Likely | 10 to 14 mph E | 63% |
| Wednesday Night | 54°F | Chance Showers And Thunderstorms | 13 mph E | 60% |
| Thursday | 70°F | Slight Chance Rain Showers | 10 mph NE | 18% |
| Thursday Night | 53°F | Mostly Cloudy | 6 to 9 mph NE | 13% |
| Friday | 71°F | Partly Sunny | 7 to 12 mph NE | 14% |
| Friday Night | 50°F | Partly Cloudy | 6 to 12 mph NE | 14% |
Forecast source: National Weather Service (api.weather.gov) for Delaware (40.286, -83.075). Updated through the day.
Growing snapshot for Delaware
Last spring frost
Apr 19
First fall frost
Oct 26
Growing season
188 days
Hardiness zone
6b
More local growing data for Delaware: nearby ZIP 43015 weather · frost dates · planting calendar · Ohio frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Marysville, Oh (13.1 mi from Delaware). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.