Our Proprietary 10-Day Forecast

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Current warnings over Collinsville, 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 Collinsville, 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 Collinsville, 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 Collinsville, 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 Collinsville, 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 Collinsville, 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 Collinsville, 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 Collinsville, 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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  • GEFS, GEPS, MOGREPS & European Ensembles
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  • 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)
Climate Summary for Collinsville, IL

General Climate


Collinsville, Illinois experiences a humid continental climate, characterized by hot, humid summers and cold, snowy winters. The city receives moderate rainfall throughout the year, with occasional severe thunderstorms and tornadoes during the spring and summer months.

Temperature

    •   Average Annual Temperature

53.6°F (12°C)

    •   Average Summer Temperature

75.6°F (24.2°C)

    •   Average Winter Temperature

31.6°F (-0.3°C)

    •   Record High Temperature

117°F (47.2°C)

    •   Record Low Temperature

-26°F (-32.2°C)

Precipitation

    •   Average Annual Precipitation

40.6 inches (1031 mm)

    •   Average Snowfall

20.5 inches (52 cm)

    •   Wettest Month

May (4.4 inches or 112 mm)

    •   Driest Month

February (2.1 inches or 53 mm)

Humidity

    •   Average Annual Humidity

74%

    •   Highest Humidity

July (80%)

    •   Lowest Humidity

February (65%)

Wind

    •   Average Wind Speed

10 mph (16 km/h)

    •   Prevailing Wind Direction

West

Severe Weather

    •   Tornadoes

Collinsville is located in Tornado Alley and experiences occasional tornadoes, especially during the spring and summer months.

    •   Thunderstorms

The city also experiences frequent thunderstorms, some of which can be severe and produce hail, strong winds, and heavy rain.

Climate Change

    •   Rising Temperatures

Collinsville has seen a slight increase in average temperatures over the past several decades, consistent with global climate change trends.

    •   Changing Precipitation Patterns

The city has also experienced more extreme weather events, including heavier rainfall and more frequent droughts.

Overall, Collinsville's climate is characterized by hot, humid summers, cold, snowy winters, and moderate precipitation throughout the year. The city is also prone to severe weather events, such as tornadoes and thunderstorms.

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

    •   Collinsville sits on the floodplain of the Mississippi River, which has shaped its landscape and ecology.

    •   The area was once home to vast wetlands, including the American Bottoms, which supported a diverse array of flora and fauna.

Science

    •   In the 19th century, Collinsville became a center for coal mining and manufacturing.

    •   The city was home to the first commercial electric streetcar line in Illinois, established in 1887.

Personalities

  • Cahokia Mounds:

    Located nearby, Cahokia Mounds was the largest pre-Columbian settlement in North America. Its inhabitants were skilled in agriculture, engineering, and astronomy.

  • Pierre Menard:

    A prominent early settler and politician, Menard served as the first Lieutenant Governor of Illinois and was instrumental in the development of Collinsville.

  • Dr. John R. Brinkley:

    A controversial physician who operated a \

    • Tourist Attractions
    1. Cahokia Mounds State Historic Site: A UNESCO World Heritage Site, Cahokia Mounds is the largest pre-Columbian settlement north of Mexico. Visitors can explore the remains of the ancient city, including earthen mounds, plazas, and a reconstructed village.

    2. Gateway Arch National Park: Located just across the Mississippi River in St. Louis, Missouri, the Gateway Arch is a towering monument that symbolizes the westward expansion of the United States. Visitors can take a tram to the top of the arch for panoramic views of the city and surrounding area.

    3. St. Louis Zoo: One of the top-rated zoos in the United States, the St. Louis Zoo is home to over 17,000 animals from around the world. Visitors can see everything from lions and tigers to elephants and penguins.

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