Our Proprietary 10-Day Forecast

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Current warnings over Lemont, 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 Lemont, 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 Lemont, 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 Cook 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 Lemont, 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 Lemont, 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 Lemont, 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 Lemont, 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 Lemont, 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 Cook 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)
Lemont, Illinois Climate Summary

Lemont, Illinois is located in the Midwestern United States, just southwest of Chicago. The city has a humid continental climate, with hot summers and cold winters.

Average Temperatures

    •   Summer

The average high temperature in July is 86°F (30°C), and the average low temperature is 66°F (19°C).

    •   Winter

The average high temperature in January is 32°F (0°C), and the average low temperature is 16°F (-9°C).

Precipitation

    •   Lemont receives an average of 35 inches (89 cm) of precipitation each year.
    •   The majority of precipitation falls during the spring and summer months.
    •   Snowfall is common during the winter months, with an average of 25 inches (64 cm) falling each year.

Climate Extremes

    •   The highest temperature ever recorded in Lemont was 112°F (44°C) on July 13, 1936.
    •   The lowest temperature ever recorded in Lemont was -30°F (-34°C) on January 20, 1985.

Climate Change

    •   The climate in Lemont is changing, as it is in many parts of the world.
    •   The average temperature in Lemont has increased by about 2°F (1°C) since the late 19th century.
    •   The number of days with extreme heat has also increased.
    •   These changes are likely due to human-caused climate change.

Impact of Climate Change

    •   The changing climate is having a number of impacts on Lemont, including:
    •   More frequent and severe heat waves
    •   Increased flooding
    •   Changes in plant and animal life
    •   Increased risk of disease

Adaptation and Mitigation

    •   The city of Lemont is taking steps to adapt to the changing climate, including:
    •   Planting trees to provide shade and reduce heat island effect
    •   Installing green infrastructure to reduce flooding
    •   Educating residents about climate change and its impacts
    •   The city is also working to reduce its greenhouse gas emissions, which contribute to climate change. These efforts include:
    •   Investing in renewable energy
    •   Promoting energy efficiency
    •   Encouraging sustainable transportation

Conclusion

The climate in Lemont is changing, and these changes are having a number of impacts on the city. The city is taking steps to adapt to the changing climate and reduce its greenhouse gas emissions.

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

    •   Lemont is home to the Waterfall Glen Forest Preserve, a 2,500-acre natural area featuring cascading waterfalls, limestone cliffs, and a diverse ecosystem.

    •   The Des Plaines River cuts through Lemont, providing a habitat for a variety of aquatic life, including fish, turtles, and birds.

Science

    •   The Argonne National Laboratory, a renowned research facility, is located just outside Lemont. It has played a significant role in nuclear physics, materials science, and other scientific advancements.

    •   Lemont is home to the Illinois State Geological Survey, which conducts research on the state's geology and natural resources.

Personalities

    •   George M. Pullman, the inventor of the Pullman sleeping car, established the Pullman Palace Car Company in Lemont in 1864.

    •   John G. Shedd, the founder of the Shedd Aquarium in Chicago, was born in Lemont in 1850.

    •   Jane Addams, the Nobel Peace Prize winner and social reformer, lived in Lemont during her childhood.

Tourist Attractions
1.The Forge: Lemont Quarries

- A unique and picturesque park that features a series of abandoned limestone quarries that have been transformed into a beautiful recreational area. Visitors can enjoy hiking, biking, fishing, and kayaking, as well as exploring the historic ruins of the old quarry buildings.

2.The Morton Arboretum

- A world-renowned botanical garden that is home to over 4,100 species of trees and shrubs from around the world. Visitors can stroll through the arboretum's many gardens, attend educational programs, and enjoy the beauty of the natural surroundings.

3.The Joliet Iron Works Historic Site

- A National Historic Landmark that tells the story of the iron industry in the United States. Visitors can tour the site's historic buildings, learn about the iron-making process, and explore the surrounding parkland.

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