Our Proprietary 10-Day Forecast

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Current warnings over Gridley, 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 Gridley, 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 Gridley, 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 Gridley, 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 Gridley, 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 Gridley, 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 Gridley, 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 Gridley, 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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  • 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)
Gridley, Illinois Climate Summary

Temperature

    •   Average annual temperature: 48.6°F (9.2°C)
    •   Average January temperature: 25.9°F (-3.4°C)
    •   Average July temperature: 73.2°F (22.9°C)
    •   Record high temperature: 113°F (45°C)
    •   Record low temperature: -32°F (-35.6°C)

Precipitation

    •   Average annual precipitation: 35.4 inches (899 mm)
    •   Average number of days with precipitation: 102
    •   Average annual snowfall: 25.9 inches (66 cm)
    •   Record 24-hour precipitation: 7.5 inches (191 mm)
    •   Record snowfall in a single storm: 18.0 inches (46 cm)

Humidity

    •   Average annual relative humidity: 73%
    •   Average January relative humidity: 79%
    •   Average July relative humidity: 67%

Wind

    •   Average annual wind speed: 10.2 mph (16.4 km/h)
    •   Prevailing wind direction: Southwest

Climate Classification

    •   Köppen climate classification: Dfa (hot summer continental climate)

Tornado Activity

    •   Average number of tornadoes per year: 0.2
    •   Most tornadoes occur in May and June

Severe Weather

    •   Gridley is located in an area that is prone to severe weather, including tornadoes, hail, and thunderstorms.

Climate Change

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

Sources

    •   National Oceanic and Atmospheric Administration (NOAA)
    •   Midwestern Regional Climate Center (MRCC)
    •   Illinois State Climatologist

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

    •   Gridley is located within the Grand Prairie Natural Division, known for its rolling hills and prairie grasses.

    •   The Mackinaw River, a tributary of the Illinois River, flows through Gridley, providing habitat for fish and wildlife.

    •   The Gridley Cemetery is home to a large sycamore tree, estimated to be over 300 years old.

Science

    •   Gridley is the birthplace of Dr. Charles W. Caldwell, a physician and naturalist who played a significant role in the development of American science in the 19th century.

    •   The Gridley Public Library houses a collection of Caldwell's writings and artifacts.

Personalities

    •   Gridley was founded in 1854 by Samuel B. Gridley, a prominent Illinois politician and businessman.

    •   The town is also associated with John Wesley Powell, a geologist and explorer who led the first expedition through the Grand Canyon in 1869.

    •   Gridley is the hometown of Dr. Edward H. Moore, a renowned mathematician who served as President of the American Mathematical Society.

Tourist Attractions
1.Kickapoo State Recreation Area

is a 2,800-acre park located just north of Gridley. The park features a variety of recreational opportunities, including camping, hiking, fishing, and boating.

2.The McLean County Museum of History

is located in downtown Bloomington, just a short drive from Gridley. The museum tells the story of McLean County's history through exhibits on agriculture, industry, and culture.

3.The Miller Park Zoo

is located in Bloomington, just a short drive from Gridley. The zoo is home to over 200 animals from around the world, including lions, tigers, bears, and monkeys.

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