New Haven, OH Weather & Growing Conditions
Tonight
56°F
Partly Cloudy
Partly cloudy, with a low around 56. East wind 2 to 6 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 56°F | Partly Cloudy | 2 to 6 mph E | 1% |
| Saturday | 78°F | Chance Rain Showers | 5 mph SE | 45% |
| Saturday Night | 65°F | Showers And Thunderstorms | 7 mph S | 77% |
| Sunday | 76°F | Showers And Thunderstorms | 6 to 12 mph NW | 91% |
| Sunday Night | 57°F | Rain Showers Likely | 12 mph NE | 63% |
| Monday | 68°F | Chance Rain Showers | 10 to 15 mph NE | 38% |
| Monday Night | 54°F | Chance Rain Showers | 10 to 16 mph NE | 39% |
| Tuesday | 68°F | Chance Rain Showers | 14 mph NE | 39% |
| Tuesday Night | 55°F | Rain Showers Likely | 14 mph NE | 55% |
| Wednesday | 68°F | Rain Showers Likely | 14 mph E | 55% |
| Wednesday Night | 54°F | Chance Rain Showers | 7 to 12 mph E | 54% |
| Thursday | 69°F | Chance Rain Showers | 9 mph NE | 27% |
| Thursday Night | 54°F | Slight Chance Rain Showers | 3 to 9 mph N | 20% |
| Friday | 69°F | Slight Chance Rain Showers | 5 to 10 mph N | 16% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for New Haven, OH
Last spring frost
Apr 25
First fall frost
Oct 25
Growing season
183 days
Hardiness zone
6a
Explore more for New Haven, OH: full frost dates · planting calendar · Ohio frost dates
Climate data from the nearest NOAA station, Norwalk Wwtp, Oh (16.4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.