Our Proprietary 10-Day Forecast

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Current warnings over Rock Falls, 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 Rock Falls, 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 Rock Falls, 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 Whiteside 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 Rock Falls, 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 Rock Falls, 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 Rock Falls, 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 Rock Falls, 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 Rock Falls, 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 Whiteside 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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  • GEFS, GEPS, MOGREPS & European Ensembles
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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)
Rock Falls, Illinois Climate Summary

General Climate


Rock Falls, Illinois experiences a humid continental climate, characterized by warm, humid summers and cold, snowy winters. The city is located in USDA plant hardiness zone 5b, with an average annual temperature of 49.9°F (9.9°C).

Temperature

    •   Summer (June-August)

Average high temperatures range from 83°F (28°C) to 86°F (30°C), while average low temperatures range from 63°F (17°C) to 66°F (19°C).

    •   Winter (December-February)

Average high temperatures range from 29°F (-2°C) to 35°F (2°C), while average low temperatures range from 14°F (-10°C) to 20°F (-7°C).

Precipitation

    •   Annual Average

Rock Falls receives an average of 36.5 inches (927 mm) of precipitation per year, distributed relatively evenly throughout the year.

    •   Summer (June-August)

The summer months typically see the highest precipitation, with an average of 3.7 inches (94 mm) per month.

    •   Winter (December-February)

The winter months typically see the lowest precipitation, with an average of 2.2 inches (56 mm) per month.

Snowfall

    •   Average Annual Snowfall

Rock Falls receives an average of 30.5 inches (77 cm) of snowfall per year.

    •   Winter (December-February)

The winter months typically see the highest snowfall, with an average of 10.2 inches (26 cm) per month.

Humidity

    •   Average Annual Relative Humidity

The average annual relative humidity in Rock Falls is 73%.

    •   Summer (June-August)

The summer months typically see the highest humidity, with an average relative humidity of 78%.

    •   Winter (December-February)

The winter months typically see the lowest humidity, with an average relative humidity of 68%.

Wind

    •   Average Annual Wind Speed

The average annual wind speed in Rock Falls is 10.5 mph (16.9 km/h).

    •   Summer (June-August)

The summer months typically see the highest wind speeds, with an average wind speed of 11.5 mph (18.5 km/h).

    •   Winter (December-February)

The winter months typically see the lowest wind speeds, with an average wind speed of 9.5 mph (15.3 km/h).

Sunshine

    •   Average Annual Sunshine

Rock Falls receives an average of 2,030 hours of sunshine per year.

    •   Summer (June-August)

The summer months typically see the highest sunshine hours, with an average of 8.5 hours per day.

    •   Winter (December-February)

The winter months typically see the lowest sunshine hours, with an average of 4.5 hours per day.

Climate Extremes

    •   Record High Temperature

109°F (43°C) on July 14, 1936

    •   Record Low Temperature

-33°F (-36°C) on January 20, 1985

    •   Record 24-Hour Snowfall

15.0 inches (38 cm) on January 11, 1979

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

    •   Rock Falls is situated along the Rock River, a major tributary of the Mississippi River.

    •   The area was once home to vast prairies, wetlands, and forests.

    •   The city is known for its limestone bluffs, which were formed by the erosion of the river over millions of years.

Science

    •   The Sinnissippi Center is a local science center that features exhibits on astronomy, physics, and natural history.

    •   The city is home to the Rock Falls Dam, which generates hydroelectric power and provides flood control.

Personalities

  • Frank Lloyd Wright:

    The renowned architect designed several homes in Rock Falls, including the Dana-Thomas House and the B. Harley Bradley House.

  • John Deere:

    The inventor of the steel plow lived in Rock Falls for a brief period.

  • Ronald Reagan:

    The 40th President of the United States visited Rock Falls during his 1980 presidential campaign.

    • Tourist Attractions
    1.Lowell Park:

    A scenic park along the Rock River, offering hiking trails, a playground, picnic areas, and a dog park.

    2.White Pines Forest State Park:

    Located just west of Rock Falls, this park features a large stand of white pine trees, hiking trails, a campground, and a lake for fishing and boating.

    3.Black Hawk Statue:

    A towering statue of Chief Black Hawk, a renowned Native American leader, located in nearby Oregon, IL.

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