Our Proprietary 10-Day Forecast

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Current warnings over Dupo, 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 Dupo, 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 Dupo, 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 St. Clair 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 Dupo, 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 Dupo, 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 Dupo, 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 Dupo, 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 Dupo, 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 St. Clair 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.
 
See the latest forecast data as the models update.
 
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Climate Summary
(made with AI, use with caution)
Dupo, Illinois, located in the Midwestern United States, experiences a humid continental climate (Köppen climate classification Dfa), characterized by warm, humid summers and cold, snowy winters. Here is a summary of the climate in Dupo:

Temperature


    •   Average annual temperature: 53.3°F (11.8°C)
    •   Average summer temperature (June-August): 76.3°F (24.6°C)
    •   Average winter temperature (December-February): 28.7°F (-1.8°C)
    •   Record high temperature: 113°F (45°C)
    •   Record low temperature: -24°F (-31°C)

Precipitation


    •   Average annual precipitation: 40.8 inches (1036 mm)
    •   Average snowfall: 19.7 inches (50 cm)
    •   Rainiest month: May (4.4 inches or 112 mm)
    •   Snowiest month: January (6.5 inches or 16.5 cm)

Humidity


    •   Average annual relative humidity: 73%
    •   Highest humidity: July (80%)
    •   Lowest humidity: January (65%)

Wind


    •   Average wind speed: 10.4 mph (16.8 km/h)
    •   Prevailing wind direction: Southwest

Climate Highlights


    •   Dupo experiences four distinct seasons, with hot and humid summers, cold and snowy winters, and mild spring and fall seasons.
    •   Summer temperatures can reach into the 90s°F (30s°C), with high humidity levels making it feel even hotter.
    •   Winters are cold and snowy, with temperatures often dropping below freezing and occasional snowfall.
    •   Spring and fall are generally mild and pleasant, with temperatures ranging from the 40s to 70s°F (5 to 20°C).
    •   Dupo is located in Tornado Alley, a region of the United States that experiences frequent tornadoes.
    •   The city is also prone to severe thunderstorms, hail, and flooding during the spring and summer months.

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

    •   Dupo sits on the Mississippi River floodplain, creating a rich ecosystem of wetlands, forests, and prairies.

    •   The area is home to a diverse array of wildlife, including bald eagles, river otters, and white-tailed deer.

Science

    •   Dupo is home to the Illinois State Geological Survey, which studies the state's geology and natural resources.

    •   The nearby Fermi National Accelerator Laboratory (Fermilab) is a world-renowned particle physics research facility.

Personalities

  • Captain James B. Eads:

    A renowned engineer who designed and built the Eads Bridge in St. Louis, which crosses the Mississippi River near Dupo.

  • Dr. Charles D. Walcott:

    A paleontologist who discovered the Burgess Shale fossils in British Columbia, providing valuable insights into the evolution of life. Walcott was a resident of Dupo for many years.

    • Tourist Attractions
    1.Cahokia Mounds State Historic Site

    (Collinsville, IL): A UNESCO World Heritage Site and the largest pre-Columbian settlement north of Mexico.

    2.Gateway Arch National Park

    (St. Louis, MO): A iconic landmark and symbol of the westward expansion of the United States.

    3.Saint Louis Zoo

    (St. Louis, MO): One of the largest and most comprehensive zoos in the United States, featuring over 18,000 animals from around the world.

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