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
62°F
Partly Cloudy
Partly cloudy, with a low around 62. South wind around 15 mph, with gusts as high as 28 mph.
7-day forecast for New Haven
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 62°F | Partly Cloudy | 15 mph S | 14% |
| Wednesday | 67°F | Light Rain | 15 to 18 mph S | 85% |
| Wednesday Night | 52°F | Light Rain Likely | 8 to 18 mph SW | 67% |
| Thursday | 63°F | Mostly Sunny | 8 to 15 mph SW | 3% |
| Thursday Night | 46°F | Mostly Cloudy | 2 to 9 mph SW | 4% |
| Friday | 58°F | Chance Light Rain | 3 to 8 mph W | 34% |
| Friday Night | 40°F | Chance Light Rain | 7 mph NW | 34% |
| Saturday | 52°F | Slight Chance Light Rain | 9 mph NW | 23% |
| Saturday Night | 34°F | Slight Chance Light Rain then Partly Cloudy | 2 to 6 mph W | 21% |
| Sunday | 54°F | Mostly Sunny | 3 to 12 mph SW | 14% |
| Sunday Night | 34°F | Partly Cloudy | 9 mph W | 14% |
| Monday | 57°F | Slight Chance Light Rain | 7 to 13 mph W | 17% |
| Monday Night | 38°F | Slight Chance Light Rain then Partly Cloudy | 12 mph SW | 17% |
| Tuesday | 60°F | Mostly Sunny | 13 mph W | 5% |
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 Nov 4, 2026.