Our Proprietary 10-Day Forecast

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Current warnings over Henry, 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 Henry, 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 Henry, 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 Marshall 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 Henry, 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 Henry, 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 Henry, 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 Henry, 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 Henry, 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 Marshall 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)
Henry, IL Climate Summary

Temperature

    •   Average annual temperature: 50.9°F (10.5°C)
    •   Average summer temperature: 73.2°F (22.9°C)
    •   Average winter temperature: 28.6°F (-1.9°C)
    •   Highest recorded temperature: 110°F (43.3°C)
    •   Lowest recorded temperature: -30°F (-34.4°C)

Precipitation

    •   Average annual precipitation: 37.2 inches (945 mm)
    •   Average snowfall: 26.4 inches (67 cm)
    •   Wettest month: May (4.8 inches)
    •   Driest month: February (1.6 inches)

Humidity

    •   Average annual relative humidity: 71%
    •   Highest average relative humidity: January (78%)
    •   Lowest average relative humidity: July (63%)

Wind

    •   Average annual wind speed: 10.3 mph (16.6 km/h)
    •   Most common wind direction: West

Climate Zones

    •   Köppen climate classification: Dfa (continental climate with hot summers and cold winters)
    •   USDA plant hardiness zone: 5b

Climate Summary

Henry, Illinois has a continental climate with hot summers and cold winters. The average annual temperature is 50.9°F (10.5°C), with average summer temperatures of 73.2°F (22.9°C) and average winter temperatures of 28.6°F (-1.9°C). The highest recorded temperature was 110°F (43.3°C) and the lowest recorded temperature was -30°F (-34.4°C).

Henry receives an average of 37.2 inches (945 mm) of precipitation per year, with an average snowfall of 26.4 inches (67 cm). The wettest month is May, with an average precipitation of 4.8 inches, and the driest month is February, with an average precipitation of 1.6 inches.

The average annual relative humidity is 71%, with the highest average relative humidity in January (78%) and the lowest average relative humidity in July (63%).

The average annual wind speed is 10.3 mph (16.6 km/h), with the most common wind direction being west.

Henry is located in USDA plant hardiness zone 5b, which means that the average annual minimum temperature is between -15°F and -10°F (-26.1°C and -23.3°C).

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

    •   Henry is located in the Grand Prairie Natural Division of Illinois, known for its vast grasslands and wetlands.

    •   The Illinois River flows through the area, providing habitat for a diverse range of aquatic life.

    •   The Great Marsh, a 10,000-acre wetland, is located just south of Henry and is home to numerous bird species.

Science

    •   Henry was the birthplace of physicist John Bardeen, who won two Nobel Prizes for his work on transistors and superconductivity.

    •   The Fermi National Accelerator Laboratory (Fermilab) is located 20 miles east of Henry. Fermilab is a world-renowned center for particle physics research.

Personalities

    •   Henry was named after Henry Clay, a prominent American politician.

    •   John C. Fremont, the \

Tourist Attractions
1.Starved Rock State Park

(15 miles north) - A scenic park featuring sandstone canyons, waterfalls, and hiking trails.

2.Buffalo Rock State Park

(10 miles south) - A park with a large sandstone bluff overlooking the Illinois River, offering scenic views and hiking trails.

3.Henry County Historical Museum

(in Henry) - A museum showcasing the history of Henry County, with exhibits on farming, industry, and local culture.

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