New Haven, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for New Haven, a village in White County, Illinois.
This Afternoon
79°F
Mostly Sunny
Mostly sunny. High near 79, with temperatures falling to around 76 in the afternoon. South southeast wind around 17 mph, with gusts as high as 25 mph.
7-day forecast for New Haven
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 79°F | Mostly Sunny | 17 mph SSE | 2% |
| Tonight | 58°F | Rain Showers | 8 to 16 mph S | 97% |
| Wednesday | 70°F | Slight Chance Rain Showers then Partly Sunny | 6 to 13 mph SW | 15% |
| Wednesday Night | 44°F | Partly Cloudy | 5 mph WSW | 0% |
| Thursday | 69°F | Sunny | 2 to 8 mph SW | 0% |
| Thursday Night | 44°F | Partly Cloudy | 0 to 3 mph W | 5% |
| Friday | 62°F | Partly Sunny | 2 to 9 mph NW | 6% |
| Friday Night | 39°F | Partly Cloudy | 2 to 8 mph NNW | 2% |
| Saturday | 57°F | Partly Sunny | 5 mph NNW | 0% |
| Saturday Night | 34°F | Partly Cloudy | 2 mph NW | 2% |
| Sunday | 61°F | Mostly Sunny | 1 to 7 mph W | 6% |
| Sunday Night | 34°F | Mostly Clear | 1 to 5 mph NW | 7% |
| Monday | 64°F | Sunny | 1 to 8 mph WNW | 3% |
| Monday Night | 37°F | Mostly Clear | 5 mph SW | 0% |
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 Nov 4, 2026.