Our Proprietary 10-Day Forecast

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Current warnings over McCullom Lake, 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 McCullom Lake, 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 McCullom Lake, 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 McHenry 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 McCullom Lake, 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 McCullom Lake, 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 McCullom Lake, 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 McCullom Lake, 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 McCullom Lake, 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 McHenry 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)
McCullom Lake, Illinois has a humid continental climate (Köppen Dfa), with hot, humid summers and cold, snowy winters.

Temperature

    •   Average annual temperature: 48.5°F (9.2°C)
    •   Average summer temperature (June-August): 74.4°F (23.6°C)
    •   Average winter temperature (December-February): 24.6°F (-4.1°C)
    •   Record high temperature: 115°F (46°C) set on July 14, 1936
    •   Record low temperature: -38°F (-39°C) set on January 20, 1985

Precipitation

    •   Average annual precipitation: 37.3 inches (94.7 cm)
    •   Average snowfall: 29.8 inches (75.7 cm)
    •   Wettest month: May, with an average of 4.5 inches (11.4 cm) of precipitation
    •   Driest month: February, with an average of 1.7 inches (4.3 cm) of precipitation

Seasons

    •   Spring (March-May): Spring in McCullom Lake is generally mild, with average temperatures ranging from 30°F to 60°F (-1°C to 16°C). Precipitation is common, with an average of 3.5 inches (8.9 cm) of rain per month.
    •   Summer (June-August): Summers are hot and humid, with average temperatures ranging from 60°F to 80°F (16°C to 27°C). Precipitation is also common, with an average of 4 inches (10.2 cm) of rain per month.
    •   Fall (September-November): Fall is generally mild, with average temperatures ranging from 40°F to 60°F (4°C to 16°C). Precipitation is common, with an average of 3 inches (7.6 cm) of rain per month.
    •   Winter (December-February): Winters are cold and snowy, with average temperatures ranging from 10°F to 30°F (-12°C to -1°C). Precipitation is common, with an average of 2.5 inches (6.4 cm) of snow per month.

Climate Change

Like many regions around the world, McCullom Lake is experiencing the effects of climate change. Average temperatures have been rising in recent decades, and precipitation patterns have become more variable. These changes are expected to continue in the future, leading to more extreme weather events, such as heat waves, droughts, and floods.

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

    •   McCullom Lake is a 1,500-acre glacial lake located in McHenry County, Illinois.

    •   It is home to a diverse array of aquatic plants and animals, including over 30 species of fish.

    •   The lake is a popular spot for fishing, boating, and birdwatching.

Science

    •   McCullom Lake has been the subject of numerous scientific studies, including research on its water quality, fish populations, and bird habitats.

    •   The lake is part of the Fox River watershed and plays an important role in the region's water cycle.

    •   Scientists have used McCullom Lake as a model system to study the effects of climate change on aquatic ecosystems.

Personalities

    •   McCullom Lake is named after John McCullom, a pioneer who settled in the area in the 1830s.

    •   The lake was once a popular vacation spot for wealthy Chicagoans, including Marshall Field and George Pullman.

    •   In the 1920s, the lake became a popular destination for bootleggers during Prohibition.

Tourist Attractions
1.Starved Rock State Park:

A scenic park with canyons, waterfalls, and hiking trails, located about 20 miles west of Mccullom Lake.

2.Matthiessen State Park:

A park with waterfalls, canyons, and hiking trails, located about 25 miles northwest of Mccullom Lake.

3.Lowden State Park:

A park with a lake, hiking trails, and camping facilities, located about 15 miles south of Mccullom Lake.

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