Our Proprietary 10-Day Forecast

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Current warnings over Downers Grove, 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 Downers Grove, 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 Downers Grove, 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 DuPage 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 Downers Grove, 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 Downers Grove, 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 Downers Grove, 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 Downers Grove, 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 Downers Grove, 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 DuPage 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)
Climate Summary for Downers Grove, IL

General Climate


Downers Grove, Illinois experiences a humid continental climate, characterized by warm, humid summers and cold, snowy winters. The city is located in USDA Hardiness Zone 5b, with an average annual temperature of 50.2°F (10.1°C).

Temperature

    •   Summer (June-August)

Average high temperatures range from 80-85°F (27-29°C), with average low temperatures in the mid-60s °F (18-19°C).

    •   Winter (December-February)

Average high temperatures hover around the freezing mark, while average low temperatures dip into the teens °F (-8 to -12°C).

Precipitation

    •   Annual Average

Downers Grove receives an average of 36.7 inches (93.2 cm) of precipitation per year, distributed fairly evenly throughout the year.

    •   Snowfall

The city averages 31.6 inches (80.3 cm) of snowfall annually, with the heaviest snowfall occurring in January and February.

Sunshine

    •   Annual Average

Downers Grove enjoys an average of 2,050 hours of sunshine per year, with the sunniest months being June and July.

Humidity

    •   Summer

Relative humidity levels in the summer months tend to be high, often reaching 70-80%.

    •   Winter

Winter months experience lower humidity levels, typically ranging from 40-50%.

Wind

    •   Prevailing Wind Direction

The prevailing wind direction in Downers Grove is from the west-southwest.

    •   Average Wind Speed

The average wind speed is 10.5 mph (16.9 km/h), with higher wind speeds occurring during the spring and summer months.

Climate Extremes

    •   Record High Temperature

109°F (43°C) on July 14, 1936

    •   Record Low Temperature

-27°F (-33°C) on January 20, 1985

Overall, Downers Grove's climate is characterized by warm, humid summers, cold, snowy winters, and moderate precipitation throughout the year.

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

    •   Downers Grove is home to the Morton Arboretum, a world-renowned botanical garden spanning 1,700 acres with over 4,000 species of trees and shrubs.

    •   The Grove National Historic Landmark District features a remnant of the original oak savanna that once covered the area.

Science

    •   Fermi National Accelerator Laboratory (Fermilab), a leading particle physics research facility, is located in nearby Batavia.

    •   Downers Grove resident Dr. Ernest Lawrence won the Nobel Prize in Physics in 1939 for inventing the cyclotron, a particle accelerator.

Personalities

    •   George Williams, founder of the YMCA, lived in Downers Grove from 1859-1870.

    •   Author Edgar Rice Burroughs, creator of Tarzan, lived in Downers Grove from 1904-1911.

    •   Architect Frank Lloyd Wright designed several homes in Downers Grove, including the Dana-Thomas House.

Tourist Attractions
1. Morton Arboretum: A 1,700-acre botanical garden with over 4,200 species of trees and other plants.

2. Brookfield Zoo: A 216-acre zoo with over 450 species of animals from around the world.

3. Cantigny Park: A 500-acre park with a formal garden, a rose garden, a Japanese garden, and a golf course.

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Westmont, IL
Clarendon Hills, ILLisle, IL
Hinsdale, ILDarien, IL
Oakbrook Terrace, ILWoodridge, IL
Willowbrook, ILOak Brook, IL
Lombard, ILWestern Springs, IL
Burr Ridge, ILIndian Head Park, IL
Glen Ellyn, ILVilla Park, IL
Wheaton, ILCountryside, IL
Chicago, IL
Milwaukee, WIMadison, WI
Aurora, ILRockford, IL
Joliet, ILPeoria, IL
North Peoria, ILElgin, IL
South Bend, INKenosha, WI
Waukegan, IL