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

Hazardous Weather Conditions

Current conditions at

Gary Regional Airport (KGYY)

Lat: 41.61°NLon: 87.41°WElev: 584ft.

Fair

68°F

20°C

Humidity 100%
Wind Speed W 14 mph
Barometer 29.45 in
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Last update 18 Jun 3:35 am CDT
Extended Forecast for

Merrillville IN

  • Overnight

    Overnight: Mostly clear, with a low around 61. West wind around 15 mph, with gusts as high as 25 mph.

    Low: 61 °F

    Mostly Clear

  • Thursday

    Thursday: Partly sunny, with a high near 71. West northwest wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 71 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 56. Northwest wind around 5 mph becoming calm.

    Low: 56 °F

    Mostly Clear

  • Juneteenth

    Juneteenth: Sunny, with a high near 75. West northwest wind 5 to 10 mph, with gusts as high as 15 mph.

    High: 75 °F

    Sunny

  • Friday Night

    Friday Night: A 20 percent chance of showers after 1am. Partly cloudy, with a low around 58. West southwest wind around 5 mph, with gusts as high as 10 mph.

    Low: 58 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

  • Saturday

    Saturday: Mostly sunny, with a high near 78.

    High: 78 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A 20 percent chance of showers after 1am. Partly cloudy, with a low around 58.

    Low: 58 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

  • Sunday

    Sunday: Showers likely, mainly after 1pm. Mostly cloudy, with a high near 73.

    High: 73 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: Showers likely, mainly before 1am. Mostly cloudy, with a low around 56.

    Low: 56 °F

    Showers
    Likely

Detailed Forecast

Overnight
Mostly clear, with a low around 61. West wind around 15 mph, with gusts as high as 25 mph.
Thursday
Partly sunny, with a high near 71. West northwest wind 10 to 15 mph, with gusts as high as 25 mph.
Thursday Night
Mostly clear, with a low around 56. Northwest wind around 5 mph becoming calm.
Juneteenth
Sunny, with a high near 75. West northwest wind 5 to 10 mph, with gusts as high as 15 mph.
Friday Night
A 20 percent chance of showers after 1am. Partly cloudy, with a low around 58. West southwest wind around 5 mph, with gusts as high as 10 mph.
Saturday
Mostly sunny, with a high near 78.
Saturday Night
A 20 percent chance of showers after 1am. Partly cloudy, with a low around 58.
Sunday
Showers likely, mainly after 1pm. Mostly cloudy, with a high near 73.
Sunday Night
Showers likely, mainly before 1am. Mostly cloudy, with a low around 56.
Monday
Mostly sunny, with a high near 68.
Monday Night
Mostly clear, with a low around 53.
Tuesday
Sunny, with a high near 74.
Tuesday Night
Partly cloudy, with a low around 54.
Wednesday
A chance of showers. Mostly sunny, with a high near 77.
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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:
3:36 am CDT Jun 18, 2026
Forecast Valid:
3am CDT Jun 18, 2026-6pm CDT Jun 24, 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