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Current warnings over Hartford, 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 Hartford, 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 Hartford, 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 Williamson 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 Hartford, 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 Hartford, 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 Hartford, 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 Hartford, 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 Hartford, 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 Williamson 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)
Hartford, Illinois, United States has a humid continental climate (Köppen Dfa), with hot, humid summers and cold, snowy winters.

Temperature

    •   Average annual temperature: 47.7 °F (8.7 °C)
    •   Average summer temperature (June-August): 72.8 °F (22.7 °C)
    •   Average winter temperature (December-February): 21.5 °F (-5.8 °C)
    •   Record high temperature: 109 °F (43 °C) on July 14, 1936
    •   Record low temperature: -38 °F (-39 °C) on January 20, 1985

Precipitation

    •   Average annual precipitation: 34.6 inches (879 mm)
    •   Average snowfall: 29.5 inches (75 cm)
    •   Wettest month: May, with an average of 4.3 inches (109 mm) of precipitation
    •   Driest month: February, with an average of 1.7 inches (43 mm) of precipitation

Climate Summary

Hartford, Illinois experiences a wide range of weather conditions throughout the year. Summers are typically hot and humid, with average temperatures in the low 80s Fahrenheit. Winters are cold and snowy, with average temperatures in the low 20s Fahrenheit. Spring and fall are generally mild, with average temperatures in the 50s and 60s Fahrenheit.

The area is also prone to severe weather, including thunderstorms, tornadoes, and hail. In addition, Hartford is located in a region that is susceptible to flooding.

Climate Change

The climate of Hartford, Illinois is changing. The average annual temperature has increased by about 2 degrees Fahrenheit since the late 19th century. This warming trend is expected to continue in the future, with average temperatures projected to increase by an additional 2-4 degrees Fahrenheit by the end of the century.

The increase in temperature is leading to a number of changes in the climate of Hartford, Illinois. These changes include:

    •   More extreme heat events
    •   More intense storms
    •   Changes in the timing and amount of precipitation
    •   Longer growing seasons

These changes are having a significant impact on the environment, economy, and public health of Hartford, Illinois.

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

    •   Hartford is located in the Illinois River Valley, a major flyway for migratory birds.

    •   The nearby Piasa Creek is home to a diverse ecosystem, including bald eagles, herons, and turtles.

    •   The area around Hartford was once a vast prairie, with tallgrass species like big bluestem and Indian grass.

Science

    •   In the 19th century, Hartford was a center for scientific research and invention.

    •   Local inventor John Deere developed the self-scouring steel plow here, revolutionizing agriculture.

    •   The Hartford Waterworks, built in 1882, was one of the first municipal water systems in Illinois.

Personalities

  • John Deere (1804-1886):

    Blacksmith and inventor who founded Deere & Company, the world's largest manufacturer of agricultural equipment.

  • Jane Addams (1860-1935):

    Social reformer and Nobel Peace Prize winner who established Hull House in Chicago. She spent her childhood in Hartford.

  • Carl Sandburg (1878-1967):

    Poet and biographer who wrote extensively about the Midwest. He was born in Galesburg, Illinois, but spent his early years in Hartford.

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