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 NE 14 G 22 mph
Barometer 30.43 in
Dewpoint 23°F (-5°C)
Visibility 10.00 mi
Wind Chill22°F (-6°C)
Last update 7 Apr 4:15 am CDT
Extended Forecast for

Merrillville IN

  • Today

    Today: Mostly sunny, with a high near 41. Northeast wind 5 to 10 mph, with gusts as high as 15 mph.

    High: 41 °F

    Mostly Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 32. Northeast wind 5 to 10 mph becoming south southeast after midnight. Winds could gust as high as 15 mph.

    Low: 32 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: Partly sunny, with a high near 65. Breezy, with a south wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 65 °F

    Partly Sunny
    then Mostly
    Sunny and
    Breezy

  • Wednesday Night

    Wednesday Night: A chance of showers between 1am and 4am, then a chance of showers and thunderstorms after 4am. Mostly cloudy, with a low around 54. South wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 40%.

    Low: 54 °F

    Partly Cloudy
    then Chance
    Showers

  • Thursday

    Thursday: A chance of showers and thunderstorms. Partly sunny, with a high near 70. Southwest wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.

    High: 70 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms before 1am, then showers likely and possibly a thunderstorm between 1am and 4am, then showers likely after 4am. Mostly cloudy, with a low around 46. Chance of precipitation is 60%.

    Low: 46 °F

    Showers
    Likely

  • Friday

    Friday: A 50 percent chance of showers, mainly before 1pm. Mostly cloudy, with a high near 56.

    High: 56 °F

    Chance
    Showers

  • Friday Night

    Friday Night: Partly cloudy, with a low around 40.

    Low: 40 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 63.

    High: 63 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 41. Northeast wind 5 to 10 mph, with gusts as high as 15 mph.
Tonight
Increasing clouds, with a low around 32. Northeast wind 5 to 10 mph becoming south southeast after midnight. Winds could gust as high as 15 mph.
Wednesday
Partly sunny, with a high near 65. Breezy, with a south wind 15 to 20 mph, with gusts as high as 30 mph.
Wednesday Night
A chance of showers between 1am and 4am, then a chance of showers and thunderstorms after 4am. Mostly cloudy, with a low around 54. South wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 40%.
Thursday
A chance of showers and thunderstorms. Partly sunny, with a high near 70. Southwest wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.
Thursday Night
A chance of showers and thunderstorms before 1am, then showers likely and possibly a thunderstorm between 1am and 4am, then showers likely after 4am. Mostly cloudy, with a low around 46. Chance of precipitation is 60%.
Friday
A 50 percent chance of showers, mainly before 1pm. Mostly cloudy, with a high near 56.
Friday Night
Partly cloudy, with a low around 40.
Saturday
Mostly sunny, with a high near 63.
Saturday Night
Mostly cloudy, with a low around 52.
Sunday
Mostly cloudy, with a high near 79.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 62.
Monday
A chance of showers. Mostly cloudy, with a high near 79.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Merrillville IN
 41.47°N 87.33°W
Last Update:
3:56 am CDT Apr 7, 2026
Forecast Valid:
5am CDT Apr 7, 2026-6pm CDT Apr 13, 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