New Lenox, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for New Lenox, a village in Will County, Illinois.
Overnight
63°F
Mostly Clear
Mostly clear, with a low around 63. South wind around 5 mph.
7-day forecast for New Lenox
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 63°F | Mostly Clear | 5 mph S | 0% |
| Tuesday | 84°F | Mostly Sunny | 5 to 10 mph SSW | 6% |
| Tuesday Night | 66°F | Mostly Cloudy | 5 mph S | 10% |
| Wednesday | 81°F | Chance Showers And Thunderstorms | 5 mph SW | 52% |
| Wednesday Night | 65°F | Showers And Thunderstorms | 0 to 5 mph WSW | 88% |
| Thursday | 79°F | Showers And Thunderstorms Likely | 0 to 5 mph SSE | 81% |
| Thursday Night | 62°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph SSE | 41% |
| Friday | 82°F | Mostly Sunny | 0 to 5 mph S | 5% |
| Friday Night | 64°F | Partly Cloudy | 0 to 5 mph S | 9% |
| Saturday | 84°F | Mostly Sunny | 5 to 10 mph SSW | 11% |
| Saturday Night | 69°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 5 to 10 mph SSW | 15% |
| Sunday | 86°F | Slight Chance Showers And Thunderstorms then Mostly Sunny | 10 to 15 mph SW | 15% |
| Sunday Night | 70°F | Chance Showers And Thunderstorms | 5 to 10 mph SSW | 37% |
| Monday | 86°F | Chance Rain Showers | 5 to 10 mph SSW | 37% |
Forecast source: National Weather Service (api.weather.gov) for New Lenox (41.510, -87.970). Updated through the day.
Growing snapshot for New Lenox
Last spring frost
Apr 19
First fall frost
Oct 25
Growing season
188 days
Hardiness zone
6a
More local growing data for New Lenox: nearby ZIP 60451 weather · frost dates · planting calendar · Illinois frost dates
Nearby towns & communities
Andres
Beecher
Bolingbrook
Bonnie Brae
Braidwood
Channahon
Crest Hill
Crystal Lawns
Custer Park
Eagle Lake
Elwood
Fairmont
Frankfort
Goodenow
Homer Glen
Ingalls Park
Joliet
Lakewood Shores
Lockport
Lockport Heights
Lorenzo
Manhattan
Marley
Mokena
Monee
Peotone
Plainfield
Preston Heights
Rest Haven
Ridgewood
Climate data from the nearest NOAA station, Joliet Brandon Rd Dam, Il (7.4 mi from New Lenox). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.