New Haven, OH Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for New Haven, a community in Hamilton County, Ohio.
Tonight
62°F
Partly Cloudy then Patchy Fog
Patchy fog after 5am. Partly cloudy, with a low around 62. Northeast wind 2 to 8 mph.
7-day forecast for New Haven
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 62°F | Partly Cloudy then Patchy Fog | 2 to 8 mph NE | 4% |
| Saturday | 84°F | Areas Of Fog then Slight Chance Showers And Thunderstorms | 5 mph SE | 48% |
| Saturday Night | 68°F | Chance Showers And Thunderstorms | 3 mph S | 53% |
| Sunday | 86°F | Chance Showers And Thunderstorms | 2 to 6 mph SW | 44% |
| Sunday Night | 63°F | Chance Showers And Thunderstorms | 8 mph NE | 44% |
| Monday | 77°F | Chance Showers And Thunderstorms | 6 to 9 mph NE | 52% |
| Monday Night | 59°F | Chance Showers And Thunderstorms | 6 to 12 mph NE | 51% |
| Tuesday | 73°F | Chance Showers And Thunderstorms | 9 mph NE | 42% |
| Tuesday Night | 58°F | Chance Showers And Thunderstorms | 3 to 10 mph NE | 33% |
| Wednesday | 71°F | Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms | 3 to 8 mph N | 24% |
| Wednesday Night | 57°F | Slight Chance Showers And Thunderstorms then Mostly Cloudy | 2 to 8 mph N | 15% |
| Thursday | 72°F | Partly Sunny | 3 to 8 mph N | 9% |
| Thursday Night | 56°F | Mostly Cloudy | 2 to 8 mph N | 9% |
| Friday | 72°F | Partly Sunny | 3 to 8 mph N | 5% |
Forecast source: National Weather Service (api.weather.gov) for New Haven (39.280, -84.747). Updated through the day.
Growing snapshot for New Haven
Last spring frost
Apr 16
First fall frost
Oct 28
Growing season
193 days
Hardiness zone
6b
More local growing data for New Haven: nearby ZIP 45030 weather · frost dates · planting calendar · Ohio frost dates
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Climate data from the nearest NOAA station, Cheviot 3 W, Oh (8.6 mi from New Haven). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.