New Haven, OH Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for New Haven, a community in Huron County, Ohio.
Today
66°F
Light Rain
Rain. Cloudy, with a high near 66. South wind around 20 mph, with gusts as high as 33 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast for New Haven
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 66°F | Light Rain | 20 mph S | 95% |
| Tonight | 51°F | Light Rain Likely then Mostly Cloudy | 8 to 18 mph S | 59% |
| Thursday | 62°F | Partly Sunny | 8 to 16 mph SW | 0% |
| Thursday Night | 45°F | Mostly Cloudy then Slight Chance Rain Showers | 5 to 10 mph SW | 15% |
| Friday | 54°F | Rain Showers Likely | 5 to 9 mph W | 60% |
| Friday Night | 38°F | Rain Showers Likely | 9 mph NW | 60% |
| Saturday | 50°F | Chance Rain Showers | 8 to 12 mph NW | 25% |
| Saturday Night | 33°F | Mostly Cloudy | 3 to 7 mph W | 9% |
| Sunday | 54°F | Mostly Sunny | 5 to 13 mph W | 4% |
| Sunday Night | 33°F | Mostly Clear | 6 to 10 mph W | 4% |
| Monday | 56°F | Mostly Sunny | 6 to 10 mph W | 3% |
| Monday Night | 37°F | Mostly Clear | 9 mph SW | 3% |
| Tuesday | 60°F | Mostly Sunny | 12 mph W | 2% |
| Tuesday Night | 35°F | Partly Cloudy | 2 to 7 mph W | 2% |
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.