New Haven, OH Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for New Haven, a community in Huron County, Ohio.
Overnight
53°F
Mostly Clear
Mostly clear, with a low around 53. Southeast wind around 2 mph.
7-day forecast for New Haven
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 53°F | Mostly Clear | 2 mph SE | 0% |
| Tuesday | 84°F | Sunny | 2 mph E | 0% |
| Tuesday Night | 62°F | Mostly Clear | 0 to 3 mph NE | 0% |
| Wednesday | 87°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 0 to 5 mph SW | 16% |
| Wednesday Night | 66°F | Partly Cloudy | 1 to 5 mph SW | 13% |
| Thursday | 86°F | Mostly Sunny then Chance Showers And Thunderstorms | 3 to 8 mph SW | 50% |
| Thursday Night | 66°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 2 to 6 mph SW | 58% |
| Friday | 84°F | Showers And Thunderstorms Likely | 3 to 8 mph SW | 62% |
| Friday Night | 65°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 6 mph SW | 62% |
| Saturday | 85°F | Chance Showers And Thunderstorms | 5 to 8 mph SW | 25% |
| Saturday Night | 66°F | Chance Showers And Thunderstorms | 7 mph SW | 25% |
| Sunday | 87°F | Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms | 6 to 13 mph SW | 17% |
| Sunday Night | 69°F | Chance Showers And Thunderstorms | 9 to 13 mph SW | 36% |
| Monday | 87°F | Chance Rain Showers | 13 mph SW | 41% |
Forecast source: National Weather Service (api.weather.gov) for New Haven (41.029, -82.687). Updated through the day.
Growing snapshot for New Haven
Last spring frost
Apr 25
First fall frost
Oct 25
Growing season
183 days
Hardiness zone
6a
More local growing data for New Haven: nearby ZIP 44850 weather · frost dates · planting calendar · Ohio frost dates
Nearby towns & communities
Bellevue
Celeryville
Collins
Greenwich
Holiday Lakes
Monroeville
New London
North Fairfield
Norwalk
Plymouth
Rochester
Wakeman
Willard
Climate data from the nearest NOAA station, Norwalk Wwtp, Oh (16.4 mi from New Haven). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.