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

39°F

4°C

Humidity 42%
Wind Speed Calm
Barometer 30.64 in
Dewpoint 18°F (-8°C)
Visibility 10.00 mi
Last update 28 Mar 10:50 am CDT
Extended Forecast for

Merrillville IN

  • Today

    Today: Sunny, with a high near 47. South southwest wind 5 to 10 mph, with gusts as high as 15 mph.

    High: 47 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 38. South wind around 10 mph, with gusts as high as 20 mph.

    Low: 38 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Partly sunny, with a high near 61. South southwest wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 61 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 48. South southwest wind around 10 mph, with gusts as high as 20 mph.

    Low: 48 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 74. South southwest wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 74 °F

    Mostly Sunny

  • Monday Night

    Monday Night: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 60. Breezy.

    Low: 60 °F

    Chance
    Showers then
    Chance
    T-storms and
    Breezy

  • Tuesday

    Tuesday: A chance of showers, then showers and possibly a thunderstorm after 1pm. High near 76. Breezy. Chance of precipitation is 80%.

    High: 76 °F

    Breezy.
    Chance
    Showers then
    Showers

  • Tuesday Night

    Tuesday Night: Showers, mainly before 1am. Cloudy, with a low around 39.

    Low: 39 °F

    Showers

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 45.

    High: 45 °F

    Mostly Cloudy

Detailed Forecast

Today
Sunny, with a high near 47. South southwest wind 5 to 10 mph, with gusts as high as 15 mph.
Tonight
Increasing clouds, with a low around 38. South wind around 10 mph, with gusts as high as 20 mph.
Sunday
Partly sunny, with a high near 61. South southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Sunday Night
Partly cloudy, with a low around 48. South southwest wind around 10 mph, with gusts as high as 20 mph.
Monday
Mostly sunny, with a high near 74. South southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Monday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 60. Breezy.
Tuesday
A chance of showers, then showers and possibly a thunderstorm after 1pm. High near 76. Breezy. Chance of precipitation is 80%.
Tuesday Night
Showers, mainly before 1am. Cloudy, with a low around 39.
Wednesday
Mostly cloudy, with a high near 45.
Wednesday Night
Partly cloudy, with a low around 32.
Thursday
A chance of showers. Partly sunny, with a high near 49.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 37.
Friday
A chance of showers. Mostly sunny, with a high near 60.
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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:
10:26 am CDT Mar 28, 2026
Forecast Valid:
11am CDT Mar 28, 2026-6pm CDT Apr 3, 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