Our Proprietary 10-Day Forecast

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Current warnings over Somonauk, 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 Somonauk, 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 Somonauk, 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 DeKalb 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 Somonauk, 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 Somonauk, 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 Somonauk, 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 Somonauk, 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 Somonauk, 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 DeKalb 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)
Somonauk, Illinois Climate Summary

General Climate

    •   Somonauk, Illinois has a humid continental climate, with warm, humid summers and cold, snowy winters.
    •   The city experiences four distinct seasons, with average temperatures ranging from 20.3°F (-6.8°C) in January to 73.6°F (23.1°C) in July.
    •   Somonauk receives an average of 36.7 inches (932 mm) of precipitation per year, which is evenly distributed throughout the year.

Temperature

    •   The average annual temperature in Somonauk is 49.2°F (9.6°C).
    •   The warmest month is July, with an average temperature of 73.6°F (23.1°C).
    •   The coldest month is January, with an average temperature of 20.3°F (-6.8°C).
    •   The average daily temperature range is 21.6°F (12°C).

Precipitation

    •   Somonauk receives an average of 36.7 inches (932 mm) of precipitation per year.
    •   The wettest month is May, with an average precipitation of 4.4 inches (112 mm).
    •   The driest month is February, with an average precipitation of 1.6 inches (41 mm).
    •   Snowfall averages 32.7 inches (831 mm) per year.

Sunshine

    •   Somonauk receives an average of 2,020 hours of sunshine per year.
    •   The sunniest month is July, with an average of 275 hours of sunshine.
    •   The cloudiest month is December, with an average of 118 hours of sunshine.

Wind

    •   The average wind speed in Somonauk is 10.2 mph (16.4 km/h).
    •   The windiest month is March, with an average wind speed of 12.3 mph (19.8 km/h).
    •   The calmest month is August, with an average wind speed of 8.6 mph (13.8 km/h).

Climate Extremes

    •   The highest temperature ever recorded in Somonauk was 115°F (46.1°C) on July 14, 1936.
    •   The lowest temperature ever recorded in Somonauk was -32°F (-35.6°C) on January 20, 1985.
    •   The greatest amount of precipitation ever recorded in a single month in Somonauk was 12.15 inches (308.6 mm) in September 2008.
    •   The greatest amount of snowfall ever recorded in a single month in Somonauk was 30.0 inches (76.2 cm) in February 2011.

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

    •   Somonauk is situated on the Kankakee River, a tributary of the Mississippi River, providing a rich ecosystem for wildlife.

    •   The area was once a vast prairie, home to bison, elk, and wolves.

    •   Today, Somonauk's parks and preserves offer opportunities to observe native flora and fauna, including deer, coyotes, and numerous bird species.

Science

    •   Somonauk is the birthplace of Dr. Charles E. Merriam, a renowned zoologist and conservationist.

    •   Merriam's research on mammals, particularly the brown rat, contributed significantly to the field of ecology.

    •   He founded the U.S. Biological Survey, which later became the U.S. Fish and Wildlife Service.

Personalities

    •   Somonauk was home to the renowned artist and inventor Samuel Morse.

    •   Morse developed the telegraph and Morse code, revolutionizing long-distance communication.

    •   He resided in Somonauk for several years, where he established a farm and conducted experiments with his invention.

Tourist Attractions
1.Starved Rock State Park

(15 miles away): A stunning natural area featuring towering sandstone cliffs, waterfalls, and hiking trails.

2.Matthiessen State Park

(10 miles away): Another scenic park with waterfalls, canyons, and hiking trails.

3.Shawnee National Forest

(30 miles away): A vast forest offering hiking, camping, and wildlife viewing opportunities.

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