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.

Mostly Cloudy

70°F

21°C

Humidity 94%
Wind Speed Calm
Barometer 30.01 in
Dewpoint 68°F (20°C)
Visibility 8.00 mi
Last update 23 Aug 8:50 pm CDT
Extended Forecast for

3 Miles NW Merrillville IN

  • Tonight

    Tonight: Mostly clear, with a low around 54. Calm wind.

    Low: 54 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 76. Light and variable wind becoming northwest 5 to 10 mph in the morning.

    High: 76 °F

    Sunny

  • Monday Night

    Monday Night: Mostly cloudy, then gradually becoming clear, with a low around 56. East northeast wind around 5 mph becoming calm in the evening.

    Low: 56 °F

    Decreasing
    Clouds

  • Tuesday

    Tuesday: Sunny, with a high near 79. Calm wind becoming south southeast around 5 mph.

    High: 79 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 62. South wind around 5 mph.

    Low: 62 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 82.

    High: 82 °F

    Partly Sunny
    then Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 65.

    Low: 65 °F

    Slight Chance
    T-storms

  • Thursday

    Thursday: Sunny, with a high near 80.

    High: 80 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 63.

    Low: 63 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 54. Calm wind.
Monday
Sunny, with a high near 76. Light and variable wind becoming northwest 5 to 10 mph in the morning.
Monday Night
Mostly cloudy, then gradually becoming clear, with a low around 56. East northeast wind around 5 mph becoming calm in the evening.
Tuesday
Sunny, with a high near 79. Calm wind becoming south southeast around 5 mph.
Tuesday Night
Partly cloudy, with a low around 62. South wind around 5 mph.
Wednesday
A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 82.
Wednesday Night
A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 65.
Thursday
Sunny, with a high near 80.
Thursday Night
Mostly clear, with a low around 63.
Friday
Sunny, with a high near 80.
Friday Night
Partly cloudy, with a low around 61.
Saturday
Mostly sunny, with a high near 80.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 64.
Sunday
A chance of showers. Partly sunny, with a high near 82.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NW Merrillville IN
 41.49°N 87.35°W
Last Update:
7:41 pm CDT Aug 23, 2026
Forecast Valid:
9pm CDT Aug 23, 2026-6pm CDT Aug 30, 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