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
61°F
Mostly Cloudy then Showers And Thunderstorms
A chance of rain showers between 1am and 4am, then showers and thunderstorms. Mostly cloudy, with a low around 61. South wind 7 to 12 mph, with gusts as high as 22 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
7-day forecast for New Haven
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 61°F | Mostly Cloudy then Showers And Thunderstorms | 7 to 12 mph S | 84% |
| Wednesday | 69°F | Showers And Thunderstorms | 8 to 14 mph S | 98% |
| Wednesday Night | 48°F | Slight Chance Rain Showers then Mostly Cloudy | 2 to 7 mph SW | 16% |
| Thursday | 67°F | Mostly Sunny | 3 to 10 mph SW | 0% |
| Thursday Night | 42°F | Partly Cloudy | 0 to 5 mph W | 1% |
| Friday | 62°F | Partly Sunny | 0 to 7 mph NW | 9% |
| Friday Night | 37°F | Mostly Cloudy then Slight Chance Light Rain | 6 mph NW | 15% |
| Saturday | 56°F | Slight Chance Light Rain then Mostly Sunny | 6 mph NW | 15% |
| Saturday Night | 32°F | Partly Cloudy | 2 mph NW | 5% |
| Sunday | 58°F | Mostly Sunny | 1 to 8 mph W | 7% |
| Sunday Night | 32°F | Partly Cloudy | 2 to 6 mph W | 12% |
| Monday | 61°F | Sunny | 2 to 9 mph W | 12% |
| Monday Night | 35°F | Mostly Clear | 6 mph SW | 10% |
| Tuesday | 65°F | Sunny | 5 to 9 mph W | 2% |
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 Nov 4, 2026.