New Haven, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for New Haven, a village in White County, Illinois.
Today
98°F
Sunny
Sunny. High near 98, with temperatures falling to around 96 in the afternoon. West southwest wind around 8 mph.
7-day forecast for New Haven
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 98°F | Sunny | 8 mph WSW | 3% |
| Tonight | 72°F | Mostly Clear | 5 mph SSW | 2% |
| Sunday | 97°F | Mostly Sunny | 7 mph WSW | 2% |
| Sunday Night | 68°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 5 mph N | 23% |
| Monday | 88°F | Slight Chance Showers And Thunderstorms | 5 to 9 mph NE | 42% |
| Monday Night | 62°F | Chance Showers And Thunderstorms | 5 to 9 mph NNE | 42% |
| Tuesday | 79°F | Chance Showers And Thunderstorms | 6 to 13 mph NNE | 37% |
| Tuesday Night | 58°F | Partly Cloudy | 5 to 13 mph N | 7% |
| Wednesday | 77°F | Mostly Sunny | 6 to 9 mph N | 7% |
| Wednesday Night | 56°F | Partly Cloudy | 2 to 9 mph N | 2% |
| Thursday | 78°F | Mostly Sunny | 3 to 8 mph N | 1% |
| Thursday Night | 58°F | Partly Cloudy | 2 to 7 mph NNE | 1% |
| Friday | 80°F | Partly Sunny | 2 to 8 mph NNE | 4% |
| Friday Night | 57°F | Partly Cloudy | 2 to 7 mph NNE | 4% |
Forecast source: National Weather Service (api.weather.gov) for New Haven (37.898, -88.127). Updated through the day.
Growing snapshot for New Haven
Last spring frost
Apr 5
First fall frost
Oct 31
Growing season
209 days
Hardiness zone
7a
More local growing data for New Haven: nearby ZIP 62867 weather · frost dates · planting calendar · Illinois frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Jt Myers Locks & Dam, In (9.9 mi from New Haven). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.