Ithaca, OH Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Ithaca, a village in Darke County, Ohio.
Today
82°F
Sunny
Sunny, with a high near 82. Northeast wind around 2 mph.
7-day forecast for Ithaca
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 82°F | Sunny | 2 mph NE | 0% |
| Tonight | 61°F | Mostly Clear | 3 mph N | 1% |
| Wednesday | 84°F | Sunny | 1 to 5 mph N | 4% |
| Wednesday Night | 64°F | Mostly Clear | 5 mph W | 3% |
| Thursday | 84°F | Mostly Sunny then Chance Showers And Thunderstorms | 3 to 9 mph SW | 49% |
| Thursday Night | 66°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 7 mph SW | 70% |
| Friday | 82°F | Showers And Thunderstorms Likely | 5 to 8 mph SW | 66% |
| Friday Night | 65°F | Showers And Thunderstorms Likely | 6 mph SW | 63% |
| Saturday | 83°F | Chance Showers And Thunderstorms | 5 to 8 mph SW | 27% |
| Saturday Night | 66°F | Chance Showers And Thunderstorms then Partly Cloudy | 6 mph SW | 27% |
| Sunday | 85°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 6 to 12 mph SW | 16% |
| Sunday Night | 68°F | Slight Chance Showers And Thunderstorms | 9 mph SW | 17% |
| Monday | 86°F | Chance Showers And Thunderstorms | 9 to 13 mph SW | 27% |
| Monday Night | 68°F | Chance Showers And Thunderstorms | 10 mph SW | 34% |
Forecast source: National Weather Service (api.weather.gov) for Ithaca (39.938, -84.553). Updated through the day.
Growing snapshot for Ithaca
Last spring frost
Apr 21
First fall frost
Oct 20
Growing season
180 days
Hardiness zone
6a
More local growing data for Ithaca: nearby ZIP 45304 weather · frost dates · planting calendar · Ohio frost dates
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Wayne Lakes
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Climate data from the nearest NOAA station, Greenville Wtp, Oh (10.7 mi from Ithaca). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.