Our Proprietary 10-Day Forecast

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Current warnings over Glen Carbon, 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 Glen Carbon, 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 Glen Carbon, 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 Madison 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 Glen Carbon, 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 Glen Carbon, 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 Glen Carbon, 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 Glen Carbon, 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 Glen Carbon, 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 Madison 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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  • American GFS
  • Canadian GDPS GEM
  • German DWD ICON
  • British MetOffice's UKMET Unified Model
  • American NAM
  • American HRRR
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  • GEFS, GEPS, MOGREPS & European Ensembles
  • Probabilities & Averages
  • 3-Ensemble Mean & more!
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)
Glen Carbon, IL Climate Summary

Average Annual Temperature

54.4°F (12.4°C)

Average Annual High Temperature

65.2°F (18.4°C)

Average Annual Low Temperature

43.5°F (6.4°C)

Average Annual Precipitation

38.8 inches (98.6 cm)

Average Annual Snowfall

18.3 inches (46.5 cm)

Climate Zone

Humid continental climate (Köppen Dfa)

General Climate

Glen Carbon, Illinois has a humid continental climate, which is characterized by hot, humid summers and cold, snowy winters. The average annual temperature is 54.4°F (12.4°C), with average high temperatures in the summer reaching into the low 80s (°F) and average low temperatures in the winter dropping into the low 20s (°F). Precipitation is fairly evenly distributed throughout the year, with an average of 38.8 inches (98.6 cm) of rain and 18.3 inches (46.5 cm) of snow falling each year.

Summer

Summers in Glen Carbon are hot and humid, with average high temperatures in July and August reaching into the low 80s (°F). The average daily temperature during the summer months is 75.4°F (24.1°C). Precipitation is common during the summer, with an average of 3.5 inches (8.9 cm) of rain falling each month. Thunderstorms are also common during the summer months.

Winter

Winters in Glen Carbon are cold and snowy, with average low temperatures in January and February dropping into the low 20s (°F). The average daily temperature during the winter months is 32.2°F (0.1°C). Snowfall is common during the winter months, with an average of 6.3 inches (16 cm) of snow falling each month.

Spring and Fall

Spring and fall are transitional seasons in Glen Carbon, with temperatures gradually warming up in the spring and cooling down in the fall. The average daily temperature during the spring months is 49.1°F (9.5°C), while the average daily temperature during the fall months is 53.7°F (12.1°C). Precipitation is common during both spring and fall, with an average of 3.2 inches (8.1 cm) of rain falling each month.

Climate Change

The climate in Glen Carbon is changing, with average temperatures rising and precipitation patterns shifting. Over the past century, the average annual temperature in Glen Carbon has increased by 1.8°F (1°C). This warming trend is expected to continue in the future, with average temperatures projected to rise by an additional 2.5-5°F (1.4-2.8°C) by the end of the century. Precipitation patterns are also expected to change, with more intense and frequent storms becoming more common. These changes are likely to have a significant impact on the environment and human health in Glen Carbon.

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

    •   Glen Carbon is home to the 1,200-acre Horseshoe Lake State Park, a natural haven with a 140-acre lake and diverse wildlife.

    •   The park is a designated Important Bird Area, supporting over 200 bird species, including bald eagles and sandhill cranes.

    •   The park's wetlands are vital for water filtration and provide habitat for amphibians, reptiles, and fish.

Personalities

  • Dr. James Eads:

    Civil engineer and inventor who designed the iconic Eads Bridge in St. Louis. He lived in Glen Carbon during the construction of the bridge.

  • Dr. James H. Breasted:

    Egyptologist and archaeologist who made significant contributions to the field. He was born in Glen Carbon in 1865.

  • Dr. Robert H. Goddard:

    Rocket scientist and inventor who developed the first liquid-fueled rocket. He conducted early experiments in Glen Carbon in the 1920s.

    • Tourist Attractions
    1.Lewis and Clark State Historic Site

    (Hartford, IL): This site commemorates the expedition of Lewis and Clark, who camped here in 1803. Visitors can explore the museum, hike the trails, and see a replica of the keelboat used by the explorers.

    2.Cahokia Mounds State Historic Site

    (Collinsville, IL): This UNESCO World Heritage Site is home to the largest prehistoric Native American settlement north of Mexico. Visitors can explore the mounds, learn about the Mississippian culture, and see artifacts from the site.

    3.Gateway Arch National Park

    (St. Louis, MO): This iconic landmark is just a short drive from Glen Carbon. Visitors can take a tram to the top of the arch for panoramic views of the city and surrounding area.

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