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

81°F

27°C

Humidity 74%
Wind Speed NE 7 mph
Barometer 30.10 in
Dewpoint 72°F (22°C)
Visibility 9.00 mi
Heat Index85°F (29°C)
Last update 7 Jul 11:50 am CDT
Extended Forecast for

Merrillville IN

  • This Afternoon

    This Afternoon: Sunny, with a high near 81. North northeast wind around 5 mph.

    High: 81 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 63. Northeast wind around 5 mph becoming calm in the evening.

    Low: 63 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 85. Calm wind becoming south southwest around 5 mph in the morning.

    High: 85 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 68. South southwest wind around 5 mph, with gusts as high as 10 mph.

    Low: 68 °F

    Partly Cloudy

  • Thursday

    Thursday: Showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 85. West southwest wind 5 to 10 mph. Chance of precipitation is 60%.

    High: 85 °F

    Mostly Sunny
    then Showers
    Likely

  • Thursday Night

    Thursday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 68. Chance of precipitation is 70%.

    Low: 68 °F

    Showers
    Likely

  • Friday

    Friday: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 79.

    High: 79 °F

    Chance
    Showers then
    Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers before 1am. Mostly cloudy, with a low around 65.

    Low: 65 °F

    Chance
    Showers

  • Saturday

    Saturday: Partly sunny, with a high near 83.

    High: 83 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 81. North northeast wind around 5 mph.
Tonight
Mostly clear, with a low around 63. Northeast wind around 5 mph becoming calm in the evening.
Wednesday
Sunny, with a high near 85. Calm wind becoming south southwest around 5 mph in the morning.
Wednesday Night
Partly cloudy, with a low around 68. South southwest wind around 5 mph, with gusts as high as 10 mph.
Thursday
Showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 85. West southwest wind 5 to 10 mph. Chance of precipitation is 60%.
Thursday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 68. Chance of precipitation is 70%.
Friday
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 79.
Friday Night
A chance of showers before 1am. Mostly cloudy, with a low around 65.
Saturday
Partly sunny, with a high near 83.
Saturday Night
Partly cloudy, with a low around 65.
Sunday
Mostly sunny, with a high near 86.
Sunday Night
Mostly clear, with a low around 66.
Monday
Sunny, with a high near 88.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Merrillville IN
 41.49°N 87.32°W
Last Update:
10:26 am CDT Jul 7, 2026
Forecast Valid:
12pm CDT Jul 7, 2026-6pm CDT Jul 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