Our Proprietary 10-Day Forecast

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Current warnings over Merrillville, Indiana
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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 Merrillville, Indiana 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 Merrillville, Indiana 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 Lake County, IN

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 Merrillville, Indiana

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 Merrillville, IN 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 Merrillville, IN

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 Merrillville, IN, 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 Merrillville, Indiana

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 Lake County, Indiana

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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  • 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)
Merrillville, Indiana Climate Summary

General Climate

    •   Merrillville, Indiana has a humid continental climate, with hot, humid summers and cold, snowy winters.
    •   The city experiences all four seasons, with average temperatures ranging from 22°F in January to 77°F in July.
    •   Merrillville receives an average of 36 inches of precipitation per year, which is evenly distributed throughout the year.

Summer

    •   Summers in Merrillville are hot and humid, with average temperatures in the upper 70s and low 80s.
    •   The city experiences occasional heat waves, with temperatures reaching into the 90s or even 100s.
    •   Thunderstorms are common in the summer, and can sometimes produce severe weather, such as hail, strong winds, and tornadoes.

Fall

    •   Fall in Merrillville is mild and pleasant, with average temperatures in the 50s and 60s.
    •   The leaves on the trees change color in the fall, creating a beautiful display.
    •   Fall is a good time to enjoy outdoor activities, such as hiking, biking, and apple picking.

Winter

    •   Winters in Merrillville are cold and snowy, with average temperatures in the 20s and 30s.
    •   The city typically receives several inches of snow each winter, and ice storms are also common.
    •   Winter is a good time to enjoy indoor activities, such as reading, watching movies, and playing games.

Spring

    •   Spring in Merrillville is mild and rainy, with average temperatures in the 40s and 50s.
    •   The city experiences occasional thunderstorms in the spring, and tornadoes are also possible.
    •   Spring is a good time to plant flowers and vegetables, and to enjoy outdoor activities, such as walking, running, and biking.

Overall

    •   Merrillville, Indiana has a humid continental climate, with hot, humid summers and cold, snowy winters.
    •   The city experiences all four seasons, with average temperatures ranging from 22°F in January to 77°F in July.
    •   Merrillville receives an average of 36 inches of precipitation per year, which is evenly distributed throughout the year.

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

    •   Merrillville is home to the Deep River County Park, a 700-acre sanctuary featuring a 150-acre lake, hiking trails, and a nature center.

    •   The park is a haven for birdwatchers, with over 200 species observed.

    •   The area's wetlands support a diverse ecosystem, including amphibians, reptiles, and waterfowl.

Science

    •   Merrillville is the site of the Midwest Regional Science and Technology Center, a research and development hub.

    •   The center is home to companies and organizations focused on advanced manufacturing, energy, and healthcare.

    •   The city is also home to the Purdue University Northwest campus, which offers science and engineering programs.

Personalities

  • William Henry Harrison:

    The ninth President of the United States lived in Merrillville from 1812-1813.

  • John Dillinger:

    The notorious gangster was arrested in Merrillville in 1934.

  • Richard Hatch:

    The winner of the first season of \

    • Tourist Attractions
    1.Deep River Waterpark

    is a 25-acre water park with a variety of water slides, pools, and other attractions. It is located just north of Merrillville in Crown Point, IN.

    2.Indiana Dunes National Park

    is a 15,000-acre park located along the southern shore of Lake Michigan. It features sand dunes, beaches, forests, and wetlands. It is located about 15 miles west of Merrillville.

    3.Star Plaza Theatre

    is a performing arts center that hosts a variety of shows, including concerts, plays, and comedy shows. It is located in Merrillville.

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