Our Proprietary 10-Day Forecast

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Current warnings over Sumner, 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 Sumner, 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 Sumner, 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 Lawrence 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 Sumner, 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 Sumner, 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 Sumner, 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 Sumner, 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 Sumner, 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 Lawrence 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)
Sumner, Illinois Climate Summary

General Climate

    •   Sumner, Illinois, experiences a humid continental climate, characterized by hot, humid summers and cold, snowy winters.
    •   The city experiences four distinct seasons, with average temperatures ranging from 22.6°F in January to 77.9°F in July.
    •   Precipitation is fairly evenly distributed throughout the year, with an average annual rainfall of 41.8 inches.
    •   Sumner is located in USDA Hardiness Zone 5b, which means that the average annual minimum temperature is between -15°F and -10°F.

Temperature

    •   The average annual temperature in Sumner is 50.3°F.
    •   The warmest month is July, with an average temperature of 77.9°F.
    •   The coldest month is January, with an average temperature of 22.6°F.
    •   The highest temperature ever recorded in Sumner was 113°F on July 14, 1936.
    •   The lowest temperature ever recorded in Sumner was -35°F on January 20, 1985.

Precipitation

    •   The average annual precipitation in Sumner is 41.8 inches.
    •   The wettest month is May, with an average rainfall of 4.5 inches.
    •   The driest month is February, with an average rainfall of 2.2 inches.
    •   Sumner receives an average of 21 inches of snow per year.
    •   The snowiest month is January, with an average snowfall of 7.6 inches.

Severe Weather

    •   Sumner is located in an area that is prone to severe weather, including tornadoes, thunderstorms, and hail.
    •   The city is also at risk for flooding, especially during the spring and summer months.

Climate Change

    •   The climate in Sumner is changing, with average temperatures rising and precipitation patterns becoming more erratic.
    •   These changes are expected to continue in the future, with more extreme weather events becoming more common.

Overall, Sumner, Illinois, experiences a humid continental climate with hot, humid summers and cold, snowy winters. The city is located in an area that is prone to severe weather and is also at risk for flooding.

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

    •   Sumner lies within the Grand Prairie Natural Division, a vast expanse of tallgrass prairie once home to bison, elk, and wolves.

    •   The Little Wabash River flows through Sumner, providing a vital habitat for fish, waterfowl, and other wildlife.

Science

    •   In 1881, Sumner became home to the Sumner Observatory, one of the first astronomical observatories in Illinois.

    •   The observatory played a significant role in the study of meteors and comets, and its director, Henry Chase, was a renowned astronomer.

Personalities

  • William Jennings Bryan:

    The famous orator and three-time presidential candidate lived in Sumner for a period during his youth.

  • Carl Sandburg:

    The Pulitzer Prize-winning poet and biographer was born in Galesburg, just north of Sumner, and spent his early years in the area.

  • Charles Lindbergh:

    The aviator landed his plane in Sumner during his historic transatlantic flight in 1927, drawing a large crowd of onlookers.

    • Tourist Attractions
    1.Sam Parr State Fish and Wildlife Area

    is a 2,000-acre natural area that offers hiking, fishing, hunting, and camping. The area is home to a variety of plant and animal life, including deer, turkey, and waterfowl.

    2.Lawrence County Museum

    is a local history museum that features exhibits on the history of Lawrence County, Illinois. The museum has a collection of artifacts from the area, including farm equipment, tools, and clothing.

    3.Sumner City Park

    is a small park that offers a playground, picnic area, and walking trail. The park is a popular spot for families and children.

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