National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Gary Regional Airport (KGYY)

Lat: 41.61°NLon: 87.41°WElev: 584ft.

Overcast

32°F

0°C

Humidity 69%
Wind Speed W 10 G 16 mph
Barometer 30.38 in
Dewpoint 23°F (-5°C)
Visibility 10.00 mi
Wind Chill24°F (-4°C)
Last update 11 Jan 4:50 pm CST
Extended Forecast for

Merrillville IN

  • Tonight

    Tonight: Mostly cloudy, with a low around 28. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 28 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 41. West southwest wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 41 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 32. South southwest wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 32 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 30 percent chance of rain after noon. Partly sunny, with a high near 47. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 47 °F

    Mostly Cloudy
    then Chance
    Rain

  • Tuesday Night

    Tuesday Night: A 30 percent chance of rain. Mostly cloudy, with a low around 32. West wind around 10 mph, with gusts as high as 20 mph.

    Low: 32 °F

    Chance Rain

  • Wednesday

    Wednesday: Snow, possibly mixed with rain. High near 38. Breezy. Chance of precipitation is 80%.

    High: 38 °F

    Rain/Snow and
    Breezy

  • Wednesday Night

    Wednesday Night: Snow likely. Mostly cloudy, with a low around 18. Blustery. Chance of precipitation is 60%.

    Low: 18 °F

    Snow Likely
    and Blustery

  • Thursday

    Thursday: A chance of snow. Partly sunny, with a high near 26.

    High: 26 °F

    Chance Snow

  • Thursday Night

    Thursday Night: A chance of snow. Mostly cloudy, with a low around 19.

    Low: 19 °F

    Chance Snow

Detailed Forecast

Tonight
Mostly cloudy, with a low around 28. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Monday
Mostly sunny, with a high near 41. West southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Monday Night
Partly cloudy, with a low around 32. South southwest wind 5 to 10 mph, with gusts as high as 20 mph.
Tuesday
A 30 percent chance of rain after noon. Partly sunny, with a high near 47. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Tuesday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 32. West wind around 10 mph, with gusts as high as 20 mph.
Wednesday
Snow, possibly mixed with rain. High near 38. Breezy. Chance of precipitation is 80%.
Wednesday Night
Snow likely. Mostly cloudy, with a low around 18. Blustery. Chance of precipitation is 60%.
Thursday
A chance of snow. Partly sunny, with a high near 26.
Thursday Night
A chance of snow. Mostly cloudy, with a low around 19.
Friday
A chance of snow. Mostly cloudy, with a high near 32.
Friday Night
A chance of snow. Mostly cloudy, with a low around 19.
Saturday
A chance of snow. Partly sunny, with a high near 26.
Saturday Night
A chance of snow. Mostly cloudy, with a low around 10.
Sunday
Partly sunny, with a high near 23.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Merrillville IN
 41.47°N 87.35°W
Last Update:
5:26 pm CST Jan 11, 2026
Forecast Valid:
5pm CST Jan 11, 2026-6pm CST Jan 18, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation