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Joliet, IL 60431 Weather
Current conditions
Observed at Lewis University Airport · 1 hr ago
Forecast
10-day-
Tonight
Patchy fog after 3am. Mostly clear, with a low around 47. Wind around 0 mph.
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Thursday
Patchy fog before 9am. Sunny. High near 73, with temperatures falling to around 71 in the afternoon. North northeast wind 0 to 5 mph.
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Thursday Night
Mostly clear, with a low around 46. East wind 0 to 5 mph.
National Weather Service forecast updated 5 hrs ago.
Hourly
Hourly forecast- Now56°
- 10 PM54°
- 11 PM51°
- Thu12 AM49°
- 1 AM49°
- 2 AM48°
- 3 AM47°
- 4 AM47°
- 5 AM47°
- 6 AM47°
- 7 AM47°
- 8 AM49°
- 9 AM53°
- 10 AM61°
- 11 AM65°
- 12 PM70°
- 1 PM72°
- 2 PM72°
- 3 PM73°
- 4 PM72°
- 5 PM71°
- 6 PM67°
- 7 PM61°
- 8 PM57°
10-day forecast
Details- TonightOct 21Mostly Clear then Patchy Fog47°
- ThuOct 22Patchy Fog then Sunny46°73°
- FriOct 23Sunny48°72°
- SatOct 24Mostly Sunny49°72°
- SunOct 25Partly Sunny50°75°
- MonOct 26Partly Sunny49°70°
- TueOct 27Partly Sunny11%46°65°
- WedOct 28Partly Sunny14%66°
- ThuOct 29Cloudy38°58°
- FriOct 30Cloudy42°58°
Days after the National Weather Service's seven are MET Norway's outlook, a computer model with no forecaster's review.
Radar
Full mapWeather news near Joliet
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Air quality
Air quality is satisfactory, and air pollution poses little or no risk.
Forecast
- WedModerate
- ThuModerate
- FriModerate
Joliet and Will County, IL reporting area · 2 hrs ago. Data from AirNow (EPA and its state, local and tribal partners); preliminary and subject to change.
Sun & moon
Almanac
MonthlyJoliet, records since 1893. Normals 1991–2020. Data from NOAA's Regional Climate Centers (ACIS).
Nearby
- Chicago 48 km
- Aurora 45 km
- Naperville 39 km
- Cicero 44 km
- Hammond 39 km
- Gary 51 km
- Bolingbrook 27 km
- Orland Park 19 km
- Tinley Park 17 km
- Oak Lawn 31 km
- Berwyn 44 km
- Wheaton 46 km
Forecasters' discussion
From the National Weather Service office in LOT, issued 7 hrs ago
Key Messages
- The dry and unseasonably mild weather will continue through the upcoming weekend.
Discussion
Issued at 136 PM CDT Wed Oct 21 2026
An anomalously strong mid-level ridge over the central CONUS will anchor omega blocking across much of North America over the next several days. Meanwhile, an elongated surface ridge extending from the Lower Mississippi River Valley to the Canadian Maritimes is in the processes of congealing with another expansive high pressure shifting toward the Upper Great Lakes. As a result, quiet weather with unseasonably warm conditions will continue through the upcoming weekend. As was observed the past few mornings, generally clear skies and light/calm winds should promote shallow fog across primarily interior northern Illinois late tonight through sunrise Thursday.
The blocking pattern will slowly break down early next week as the ridge flattens and a southwestern upper-level low begins to meander toward the central CONUS. A series of smaller troughs on the periphery of a developing longwave trough across the north Pacific and western Canada will eventually pick up the southwestern low. Consensus guidance suggests that the influence of the low on our area could occur as early as Monday night, but more likely Tuesday and Wednesday. Cooler and more seasonable conditions would accompany this system.
Kluber
Aviation
Issued at 1217 PM CDT Wed Oct 21 2026
Expect generally VFR conditions with a few mid-level clouds through the period as high pressure drifts over the area. However, as has been observed during the past few mornings, MIFG/BCFG is likely at RFD/DPA and VFR BR is possible at ORD late tonight through sunrise Thursday.
Light SW winds are expected this afternoon, though a weak lake breeze may wash out and turn winds SE 5 knots or less over ORD and especially MDW toward sunset. Winds will become calm or light and VRB tonight into Thursday morning, with a lake- enhanced NE wind shift likely by Thursday afternoon.
Kluber
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.