Joliet, IL Weather Forecast
Right now it is 70°F and cloudy in Joliet (as of Tue, 10:55 AM CST). Today: high near 73°F. Tomorrow: rain likely then mostly cloudy, high near 64°F. Official NWS forecast and alerts, refreshed every 30 minutes.
Current conditions
Measured at Joliet Regional Airport (5 mi from the city center).
Weather tomorrow in Joliet
Rain Likely then Mostly Cloudy
70% chance of rain/snow64°FRain likely before noon. Mostly cloudy. High near 64, with temperatures falling to around 58 in the afternoon. South southwest wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 70%. New rainfall amounts less than a tenth of an inch possible.
Mostly Cloudy 11% chance of rain/snow48°FMostly cloudy, with a low around 48. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Weather alerts
No active National Weather Service watches, warnings or advisories for Joliet right now.
7-day forecast
Mostly Cloudy then Slight Chance Showers And Thunderstorms 95% chance of rain/snow73°F / 59°FA slight chance of showers and thunderstorms between noon and 2pm, then a chance of showers and thunderstorms. Mostly cloudy. High near 73, with temperatures falling to around 70 in the afternoon. South wind 15 to 20 mph, with gusts as high as 35 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible. Tonight: Rain and a slight chance of thunderstorms. Mostly cloudy. Low around 59, with temperatures rising to around 61 overnight. South wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. New rainfall amounts between a tenth and quarter of an inch possible.
Rain Likely then Mostly Cloudy 70% chance of rain/snow64°F / 48°FRain likely before noon. Mostly cloudy. High near 64, with temperatures falling to around 58 in the afternoon. South southwest wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 70%. New rainfall amounts less than a tenth of an inch possible. Wednesday Night: Mostly cloudy, with a low around 48. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Mostly Cloudy then Slight Chance Rain 37% chance of rain/snow58°F / 44°FA slight chance of rain after noon. Mostly cloudy, with a high near 58. West southwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 20%. Thursday Night: A chance of rain. Cloudy, with a low around 44. Chance of precipitation is 40%.
Slight Chance Rain 23% chance of rain/snow54°F / 37°FA slight chance of rain. Mostly cloudy, with a high near 54. Friday Night: Partly cloudy, with a low around 37.
Mostly Sunny54°F / 35°FMostly sunny, with a high near 54. Saturday Night: Partly cloudy, with a low around 35.
Mostly Sunny57°F / 36°FMostly sunny, with a high near 57. Sunday Night: Mostly clear, with a low around 36.
Sunny62°F / 40°FSunny, with a high near 62. Monday Night: Partly cloudy, with a low around 40.
Forecast issued by NWS forecast office LOT · updated Nov 3, 10:31 AM CST. Daytime highs and overnight lows are on the right.
Hourly forecast, radar & more on weather.gov
Nearby cities
Joliet population: 152,241 (U.S. Census Bureau, July 1, 2025 estimate). More Illinois cities · All US cities
Source: National Weather Service / NOAA (public domain), fetched live. Tachlis is not affiliated with the NWS.
Questions & answers
What is the weather tomorrow in Joliet?
Wednesday, November 4: Rain Likely then Mostly Cloudy, high near 64°F; night: mostly cloudy, low around 48°F.
Where does the Joliet forecast come from?
From the National Weather Service forecast office LOT, which writes the official forecast for Joliet's 2.5 km grid square. Current conditions come from the nearest NWS/FAA weather station.
How often is the Joliet weather updated?
This page fetches fresh data from the National Weather Service at most every 30 minutes, and checks for new watches and warnings every 5 minutes.
What time zone are the times shown in?
Local time for Joliet (America/Chicago).
Why can the current temperature differ from the forecast?
The current reading is a real measurement at a weather station, often at an airport, while the forecast describes the whole grid square around the city. Temperatures can differ by a few degrees across a city.