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
64°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms after 3am. Cloudy. Low around 64, with temperatures rising to around 66 overnight. East southeast wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 50%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast for New Lenox
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 64°F | Chance Showers And Thunderstorms | 10 mph ESE | 48% |
| Saturday | 79°F | Showers And Thunderstorms Likely | 5 to 10 mph SE | 95% |
| Saturday Night | 65°F | Showers And Thunderstorms Likely then Showers And Thunderstorms | 5 mph SSE | 94% |
| Sunday | 71°F | Showers And Thunderstorms Likely | 10 to 15 mph NNE | 66% |
| Sunday Night | 56°F | Chance Showers And Thunderstorms | 15 mph NE | 40% |
| Monday | 65°F | Chance Rain Showers | 15 mph NE | 39% |
| Monday Night | 52°F | Chance Rain Showers then Mostly Cloudy | 10 to 15 mph NE | 33% |
| Tuesday | 63°F | Slight Chance Rain Showers | 10 to 15 mph NE | 19% |
| Tuesday Night | 52°F | Mostly Cloudy | 10 to 15 mph NE | 11% |
| Wednesday | 66°F | Partly Sunny | 10 to 15 mph NNE | 10% |
| Wednesday Night | 53°F | Mostly Cloudy | 5 to 10 mph NNE | 3% |
| Thursday | 68°F | Partly Sunny | 5 to 10 mph NNE | 3% |
| Thursday Night | 54°F | Mostly Cloudy | 5 to 10 mph NE | 3% |
| Friday | 71°F | Mostly Sunny | 5 to 10 mph NE | 3% |
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 Sep 19, 2026.