New Haven, OH Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for New Haven, a community in Hamilton County, Ohio.
Today
86°F
Sunny
Sunny, with a high near 86. Northeast wind around 3 mph.
7-day forecast for New Haven
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 86°F | Sunny | 3 mph NE | 0% |
| Tonight | 63°F | Mostly Clear | 2 mph N | 1% |
| Wednesday | 88°F | Sunny | 0 to 3 mph N | 11% |
| Wednesday Night | 66°F | Mostly Clear | 2 mph NW | 4% |
| Thursday | 88°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 0 to 7 mph SW | 24% |
| Thursday Night | 68°F | Slight Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 1 to 5 mph SW | 62% |
| Friday | 86°F | Showers And Thunderstorms Likely | 1 to 7 mph SW | 65% |
| Friday Night | 67°F | Showers And Thunderstorms Likely | 0 to 3 mph SW | 65% |
| Saturday | 86°F | Chance Showers And Thunderstorms | 0 to 6 mph SW | 37% |
| Saturday Night | 67°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph SW | 31% |
| Sunday | 89°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 0 to 8 mph SW | 15% |
| Sunday Night | 69°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 2 to 6 mph SW | 15% |
| Monday | 90°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 3 to 9 mph SW | 21% |
| Monday Night | 70°F | Chance Showers And Thunderstorms | 2 to 6 mph SW | 28% |
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 Aug 4, 2026.