Our Proprietary 10-Day Forecast

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Current warnings over Le Roy, 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 Le Roy, 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 Le Roy, 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 McLean 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 Le Roy, 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 Le Roy, 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 Le Roy, 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 Le Roy, 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 Le Roy, 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 McLean 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)
Le Roy, Illinois has a humid continental climate, characterized by hot, humid summers and cold, snowy winters.

Temperature

    •   Average annual temperature: 50.4°F (10.2°C)
    •   Average summer temperature (June-August): 73.6°F (23.1°C)
    •   Average winter temperature (December-February): 26.7°F (-2.9°C)
    •   Record highest temperature: 107°F (41.7°C)
    •   Record lowest temperature: -26°F (-32.2°C)

Precipitation

    •   Average annual precipitation: 37.2 inches (94.5 cm)
    •   Average snowfall: 22.4 inches (56.9 cm)
    •   Wettest month: May (4.4 inches or 11.2 cm)
    •   Driest month: February (1.8 inches or 4.6 cm)

Humidity

    •   Average annual relative humidity: 73%
    •   Highest average relative humidity: January (80%)
    •   Lowest average relative humidity: June (66%)

Wind

    •   Average annual wind speed: 10.4 mph (16.7 km/h)
    •   Prevailing wind direction: West-northwest

Climate Summary

Le Roy, Illinois experiences warm, humid summers with average temperatures in the low 70s Fahrenheit (20s Celsius). Winters are cold and snowy, with average temperatures in the mid-20s Fahrenheit (-3 Celsius). The area receives a moderate amount of precipitation throughout the year, with the wettest months being May and June. The average annual snowfall is 22.4 inches (56.9 cm). The climate in Le Roy is generally favorable for outdoor activities year-round, with mild spring and fall seasons.

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

    •   Le Roy is located in the Grand Prairie Natural Division, known for its vast prairies and oak woodlands.

    •   The Mackinaw River, a tributary of the Illinois River, flows through Le Roy, supporting a diverse aquatic ecosystem.

    •   The city is home to the Le Roy Conservation Area, a 210-acre preserve with hiking trails and wildlife viewing opportunities.

Science

    •   Le Roy was the site of a major scientific discovery in 1871. A meteorite, known as the Le Roy Meteorite, crashed into the city, providing valuable insights into the composition of extraterrestrial objects.

    •   The city's proximity to the University of Illinois at Urbana-Champaign fostered scientific collaboration and innovation.

Personalities

  • Dr. George Washington Carver:

    The renowned agricultural scientist and inventor spent his early years in Le Roy, where he developed his passion for nature and science.

  • Dr. Charles Henry Alston:

    A prominent African American artist, Alston was born in Le Roy and later became a professor at the Art Institute of Chicago.

  • Dr. Harold Washington:

    The first African American mayor of Chicago, Washington was born in Le Roy and attended Le Roy High School.

    • Tourist Attractions
    1.Kickapoo State Recreation Area:

    A sprawling park with hiking trails, camping sites, a lake for fishing and boating, and a historic lodge.

    2.Middle Fork River Forest Preserve:

    A scenic nature preserve with hiking trails, a river for fishing and kayaking, and a large campground.

    3.Ellsworth Park Zoo:

    A small zoo with a variety of animals, including lions, tigers, bears, and monkeys.

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