New Lenox, IL Weather

Will County8:30 PM CDT41.51°N, 87.97°WElevation 669 ft

Current conditions

Clear
61°
Clear
Feels like 61°
High 73° Saturday·Low 48° tonight
WindE 5 mph
Humidity55%
Dew point45°
Pressure30.31 inHg
Visibility10.0 mi
Cloud cover24%
UV index0 Low
Sunrise7:13 AM
Sunset6:00 PM

Observed at Lewis University Airport · 1 hr ago

Forecast

10-day

  • Tonight

    Patchy fog after 3am. Mostly clear, with a low around 48. Southeast wind around 5 mph.

  • Saturday

    Patchy fog before 9am. Mostly sunny. High near 73, with temperatures falling to around 71 in the afternoon. South southeast wind 5 to 10 mph.

  • Saturday Night

    Partly cloudy, with a low around 48. South southeast wind around 5 mph.

National Weather Service forecast updated 5 hrs ago.

Hourly

Hourly forecast
  1. Now Mostly Clear 59°
  2. 9 PM Mostly Clear 57°
  3. 10 PM Mostly Clear 56°
  4. 11 PM Mostly Clear 54°
  5. Sat12 AM Mostly Clear 53°
  6. 1 AM Mostly Clear 52°
  7. 2 AM Mostly Clear 51°
  8. 3 AM Patchy Fog 50°
  9. 4 AM Patchy Fog 49°
  10. 5 AM Patchy Fog 48°
  11. 6 AM Patchy Fog 48°
  12. 7 AM Patchy Fog 48°
  13. 8 AM Patchy Fog 49°
  14. 9 AM Mostly Sunny 55°
  15. 10 AM Mostly Sunny 60°
  16. 11 AM Mostly Sunny 64°
  17. 12 PM Mostly Sunny 68°
  18. 1 PM Mostly Sunny 71°
  19. 2 PM Mostly Sunny 72°
  20. 3 PM Mostly Sunny 73°
  21. 4 PM Partly Sunny 73°
  22. 5 PM Mostly Sunny 71°
  23. 6 PM Partly Cloudy 67°
  24. 7 PM Partly Cloudy 62°

10-day forecast

Details
  1. TonightOct 23 Mostly Clear then Patchy Fog Mostly Clear then Patchy Fog48°
  2. SatOct 24 Patchy Fog then Mostly Sunny Patchy Fog then Mostly Sunny48°73°
  3. SunOct 25 Mostly Sunny Mostly Sunny50°76°
  4. MonOct 26 Partly Sunny Partly Sunny50°69°
  5. TueOct 27 Partly Sunny Partly Sunny50°68°
  6. WedOct 28 Partly Sunny Partly Sunny52°72°
  7. ThuOct 29 Mostly Sunny then Slight Chance Rain Showers Mostly Sunny then Slight Chance Rain Showers15%46°70°
  8. FriOct 30 Mostly Sunny then Slight Chance Rain Showers Mostly Sunny then Slight Chance Rain Showers17%66°
  9. SatOct 31 Partly cloudy Partly cloudy35°56°
  10. SunNov 1 Partly cloudy Partly cloudy0.02 in53°66°

Days after the National Weather Service's seven are MET Norway's outlook, a computer model with no forecaster's review.

Radar

Full map
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Weather news near New Lenox

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Air quality

49
Good
Fine particles (PM2.5)

Air quality is satisfactory, and air pollution poses little or no risk.

Forecast

  • FriModerate
  • SatModerate
  • SunModerate

Joliet and Will County, IL reporting area · 1 hr ago. Data from AirNow (EPA and its state, local and tribal partners); preliminary and subject to change.

Sun & moon

Sunrise 7:13 AM
Sunset 6:00 PM
Daylight 10 h 46 min (−2 min 35 s tomorrow)
Waxing Gibbous · 94% lit
Moonrise 4:28 PM Moonset 4:21 AM
Full moon Oct 26 New moon Nov 9

Almanac

Monthly
Record high85° (1963)
Record low24° (1917)
Wettest1.20 in (1957)
Month to date0.67 in (normal 0.00 in)

Joliet, records since 1893. Normals 1991–2020. Data from NOAA's Regional Climate Centers (ACIS).

Nearby

Forecasters' discussion

From the National Weather Service office in LOT, issued 1 hr ago

Key Messages

- Precipitation free, unseasonably warm weather will continue through this weekend, with temperatures continuing to generally run above average through next week.

- Chances for any meaningful rainfall are low through next workweek.

Discussion

Issued at 150 PM CDT Fri Oct 23 2026

Tonight through Sunday:

As of this writing, what had been a bank of extensive fog and very low clouds across Chicago's far northern suburbs this morning has finally contracted to a remaining patch near Winthrop Harbor, IL. With lake enhanced moisture evident in the Waukegan and southeast WI dew point obs, wouldn't be surprised if patchy fog sneaks back into northeastern Lake County this evening from continued light to moderate southeasterly boundary layer flow.

Another calm night is in store tonight, with the main change happening aloft in terms of strengthening southerly flow just above the nocturnal inversion. Over the southeast half or third of the area (I-88 corridor in interior Chicago metro and points southeast), flow aloft should be sufficiently weak to enable patchy shallow ground fog development. Can't completely rule out very localized dense fog, but the setup isn't nearly as favorable as this (Friday) morning. High clouds will filter in from the northwest overnight into Saturday morning, keeping overnight lows a bit milder across interior northern Illinois in particular.

On Saturday, high temperatures will likely be close to a carbon copy of today (Friday), in the lower to mid 70s. Illinois side lake cooling will be confined to the immediate shoreline during the afternoon as southerly winds back to southeast with lake influence. Following a calm and cool (relative to Saturday afternoon's warmth) Saturday night, Sunday will likely be the warmest day of this stretch unless mid and high cloud cover limits high temps a bit.

Sunday Night through Friday:

Aviation

Issued at 631 PM CDT Fri Oct 23 2026

No significant aviation forecast concerns through the period.

Surface high pressure ridge continues to move off to the east of the region early this evening, while a slow-moving cold front remains well to our west across the Plains. Locally, this will maintain a south-southeast surface wind regime tonight through Saturday. Afternoon lake breeze had pushed through ORD/MDW and GYY earlier but is now decaying after sunset. Light southeast winds overnight will turn more south or south- southeast near 10 kts on Saturday before becoming light southeast again with sunset.

VFR conditions will prevail, with only some increasing mid and high level cloud cover tonight/Saturday (bases above 15 kft).

Ratzer

Lot Watches

IL...None. IN...None. LM...None.

Forecasts, observations and alerts in the United States come from the National Weather Service (NOAA); radar from NOAA's Multi-Radar Multi-Sensor system; satellite imagery from NASA's Global Imagery Browse Services (GIBS) and NOAA's GOES satellites; the map from the U.S. Geological Survey's National Map; air quality from AirNow (EPA and its partners); hurricane information from the National Hurricane Center; climate normals and records from NOAA's Regional Climate Centers (ACIS). Forecasts outside the United States and the UV index: MET Norway (CC BY 4.0); observations outside the U.S.: airport reports via NOAA's Aviation Weather Center. Place names: GeoNames (CC BY 4.0). Data are copied on a schedule and may lag the sources; for warnings that affect your safety, follow your local National Weather Service office and emergency officials. Weather news is drawn from the 4Conservative index and reflects what the press published. Terms of use.