Our Proprietary 10-Day Forecast

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Current warnings over Joliet, Illinois
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<p>Warnings from F5Weather</a></div>

United States weather warnings are issued by various organizations under NOAA. Most from the National Weather Service, but also Storm Prediction Center and National Hurricane Center.

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Current radar over Joliet, Illinois red dot
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<p>Live radar from F5Weather</a></div>

Our radar is based off of US NEXRAD and Canadian weather radar sites through the quality controlled MRMS system. It compiles various sources for radar data and filters out erroneous returns such as sun spikes and ground clutter. We then colorize the precipitation based on our methods for determining precipitation type. Rain is in shades of green, mixed precipitation and freezing rain in shades of pink and snow is in shades of blue.

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Current satellite over Joliet, Illinois red dot
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<p>Live satellite from F5Weather</a></div>

Our satellite is from the GOES-16. It is color enhanced by using a geocolor terrain background during the day and black marble city lights at night. The daytime satellite data is Visible satellite imagery, and nighttime uses Infrared bands. The bluish clouds are fog and low cloud. The whiteest clouds are the coldest, highest cloud tops.

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Current surface weather map around Will County, IL

This surface map is from the HRRR computer model. It is a 1-hour forecast, updated hourly, which is a good estimate of the current surface conditions. This map shows the current high and low pressure centers, pressure isobar contours, wind streamlines and thickness contours. It also shows the currently depicted preciptiation estimates, although this should not be a substitute for actual live radar. The purple dashed contour is the 5400m thickness line, which is often a good proxy for the rain/snow line.

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Temperatures right now near Joliet, Illinois

This is the latest surface temperatures as depicted by the HRRR computer model, updated hourly. Although these are not actual observations, this model is a very good representation of current conditions as it factors in observations, terrain and physics to give you more detailed temperatures in areas that do not have reporting weather stations. For the latest reports at specific locations, like in Joliet, IL please see our current conditions data on the left and right side of this page, or go to our current conditions page.

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Surface wind speed map over Joliet, IL

This map shows the latest HRRR computer model winds. This depiction of the current wind directions and speeds is an estimate from the computer model. For actual observations in Joliet, IL, see the current conditions data on the left and right side of this page, or go to our current conditions page.

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Regional 24 hour rainfall expected near Joliet, Illinois

This is a forecast of the amount of precipitation expected over the next 24 hours from the HRRR weather forecast model. This is only one forecast depiction, and you should check other models to get a better idea of what may happen. You can view this and other models in more detail on our main weather forecast maps page. There, you will also be able to look at forecasts beyond just 24 hours and look at forecasts out to as far as 16 days.

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Area snowfall accumulation expected around Will County, Illinois

This is snowfall forecast, with amounts anticipated in the next 24 hours. This guidance is from the HRRR weather model. For more model forecasts out to 16 days, visit our main weather forecast maps page.

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These are Convective Outlooks from the Storm Prediction Center. Click to see Days 1-3 broken down into Tornado, Wind and Hail threats, as well as days 5-8 outlooks.

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Atlantic Hurricane and Tropical Storm Tracking Map
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<p>Hurricane Tracking from F5Weather</a></div>

Our hurricane tracking map monitors for any current or forecast tropical disturbances in the Atlantic. (See our Pacific Hurricane Tracker) Various hurricane models will draw a 'spaghetti plot' in the Atlantic Basin when a disturbance is forecast or exists, showing the system's forecast track. Once a storm has developed, the National Hurricane Center will forecast their official track. This will show up on the map along with the storm's current intensity, track and name. We will also plot some of the storm's vitals and of course the spaghetti plots from the models along with the NHC forecast track will give you an idea of where it's heading, and its forecast intensity with time.

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To view the latest computer models, visit f5wx.com for access to the weather maps and guidance that meteorologists use to make their forecasts.
 
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View Skew-T soundings, textual data tables for your location, and of course maps! Weather forecast maps of the basics like temperature, wind, pressure, humidity, dew point, cloud cover, simulated radar, travel weather, rainfall and snow are available. More advanced users can also get use out of our severe weather & tornado threat maps, as well as upper air & shear graphics.
 
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Climate Summary
(made with AI, use with caution)
Joliet, Illinois Climate Summary

Temperature

    •   Average annual temperature

51.3°F (10.7°C)

    •   Average summer temperature

72.6°F (22.6°C)

    •   Average winter temperature

29.9°F (-1.2°C)

    •   Record high temperature

114°F (45.6°C)

    •   Record low temperature

-30°F (-34.4°C)

Precipitation

    •   Average annual precipitation

36.98 inches (939.8 mm)

    •   Average snowfall

29.7 inches (75.4 cm)

    •   Number of days with precipitation

116

Humidity

    •   Average annual relative humidity

72%

Wind

    •   Average annual wind speed

10.4 mph (16.7 km/h)

Climate Type

    •   Köppen climate classification

Dfa (hot summer continental climate)

Climate Summary

Joliet, Illinois has a humid continental climate with hot summers and cold winters. The average annual temperature is 51.3°F (10.7°C). Summers are warm and humid, with average temperatures in the low 70s°F (low 20s°C). Winters are cold and snowy, with average temperatures in the low 30s°F (low 0s°C). Precipitation is evenly distributed throughout the year, with an average of 36.98 inches (939.8 mm) per year. Snowfall averages 29.7 inches (75.4 cm) per year.

Climate Trends

The climate in Joliet is changing, as it is in many parts of the world. The average annual temperature has increased by about 1 degree Fahrenheit (0.6 degrees Celsius) since the late 19th century. The number of days with extreme heat (temperatures above 90°F or 32°C) has also increased. Precipitation patterns are also changing, with more intense storms and more flooding.

Climate Impacts

The changing climate is having a number of impacts on Joliet and the surrounding area. These impacts include:

    •   Increased flooding

More intense storms are causing more flooding, which can damage homes and businesses and displace residents.

    •   Heat waves

More frequent and intense heat waves are putting a strain on the local power grid and causing health problems, especially among the elderly and the very young.

    •   Changes in plant and animal life

The changing climate is causing changes in the distribution of plants and animals. Some species are moving northward to find cooler climates, while others are disappearing altogether.

Climate Adaptation and Mitigation

The city of Joliet is taking steps to adapt to the changing climate and mitigate its impacts. These steps include:

    •   Investing in flood control infrastructure

The city is investing in new flood control infrastructure, such as levees and pumps, to help protect homes and businesses from flooding.

    •   Promoting energy efficiency

The city is promoting energy efficiency programs to help residents and businesses reduce their energy use and greenhouse gas emissions.

    •   Planting trees

The city is planting trees to help reduce the urban heat island effect and improve air quality.

The city of Joliet is also working with other communities in the region to develop a regional climate adaptation plan. This plan will help the region to better prepare for the impacts of climate change and to build a more resilient community.

Facts & Historical Information
(made with AI, use with caution)
Natural History

    •   Joliet sits atop the Dresden Escarpment, a geological formation that marks the boundary between the Mississippi River Valley and the Great Lakes Basin.

    •   The area was home to vast prairies, oak savannas, and wetlands before European settlement.

    •   The Des Plaines River, which flows through Joliet, is a vital ecosystem for fish, birds, and other wildlife.

Science

    •   Joliet is home to the Argonne National Laboratory, one of the largest scientific research facilities in the United States.

    •   The laboratory has made significant contributions to nuclear physics, materials science, and other fields.

    •   Joliet Junior College offers a variety of science programs, including engineering, biotechnology, and environmental science.

Personalities

    •   Louis Jolliet, a French explorer, co-discovered the Mississippi River in 1673. The city of Joliet is named in his honor.

    •   Father Jacques Marquette, a Jesuit missionary, accompanied Jolliet on his expedition.

    •   Richard J. Daley, the longtime mayor of Chicago, was born in Joliet in 1902.

Tourist Attractions
1.Joliet Correctional Center Historic Site:

A former maximum-security prison that has been transformed into a museum, offering guided tours and insights into the history of the American prison system.

2.Pilcher Park Nature Center:

A 600-acre park with hiking trails, a nature center, and a butterfly garden. It's a great place to escape the hustle and bustle of the city and connect with nature.

3.Hollywood Casino Joliet:

A casino and entertainment complex featuring slot machines, table games, restaurants, and live entertainment. It's a popular destination for gaming enthusiasts and those looking for a night out.

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