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.

Fog/Mist

63°F

17°C

Humidity 100%
Wind Speed Calm
Barometer 30.05 in
Dewpoint 63°F (17°C)
Visibility 6.00 mi
Last update 21 Aug 3:55 am CDT
Extended Forecast for

3 Miles NW Merrillville IN

  • Today

    Today: A 10 percent chance of showers and thunderstorms after 5pm. Patchy fog before 8am. Otherwise, partly sunny, with a high near 79. Calm wind becoming south around 5 mph in the afternoon. Winds could gust as high as 10 mph.

    High: 79 °F

    Patchy Fog
    then Slight
    Chance
    T-storms

  • Tonight

    Tonight: A chance of showers and thunderstorms before 2am, then a slight chance of showers. Mostly cloudy, with a low around 64. Southwest wind around 5 mph, with gusts as high as 10 mph. Chance of precipitation is 50%.

    Low: 64 °F

    Chance
    T-storms

  • Saturday

    Saturday: A 20 percent chance of showers and thunderstorms after 3pm. Mostly cloudy, then gradually becoming sunny, with a high near 77. North wind 5 to 15 mph, with gusts as high as 20 mph.

    High: 77 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Saturday Night

    Saturday Night: A 10 percent chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 60. North northwest wind 5 to 10 mph.

    Low: 60 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 74. North wind 5 to 10 mph, with gusts as high as 15 mph.

    High: 74 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 57.

    Low: 57 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 75.

    High: 75 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 58.

    Low: 58 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 78.

    High: 78 °F

    Mostly Sunny

Detailed Forecast

Today
A 10 percent chance of showers and thunderstorms after 5pm. Patchy fog before 8am. Otherwise, partly sunny, with a high near 79. Calm wind becoming south around 5 mph in the afternoon. Winds could gust as high as 10 mph.
Tonight
A chance of showers and thunderstorms before 2am, then a slight chance of showers. Mostly cloudy, with a low around 64. Southwest wind around 5 mph, with gusts as high as 10 mph. Chance of precipitation is 50%.
Saturday
A 20 percent chance of showers and thunderstorms after 3pm. Mostly cloudy, then gradually becoming sunny, with a high near 77. North wind 5 to 15 mph, with gusts as high as 20 mph.
Saturday Night
A 10 percent chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 60. North northwest wind 5 to 10 mph.
Sunday
Sunny, with a high near 74. North wind 5 to 10 mph, with gusts as high as 15 mph.
Sunday Night
Partly cloudy, with a low around 57.
Monday
Mostly sunny, with a high near 75.
Monday Night
Partly cloudy, with a low around 58.
Tuesday
Mostly sunny, with a high near 78.
Tuesday Night
Mostly cloudy, with a low around 62.
Wednesday
A chance of showers and thunderstorms. Partly sunny, with a high near 80.
Wednesday Night
Partly cloudy, with a low around 64.
Thursday
Mostly sunny, with a high near 79.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NW Merrillville IN
 41.49°N 87.35°W
Last Update:
3:11 am CDT Aug 21, 2026
Forecast Valid:
4am CDT Aug 21, 2026-6pm CDT Aug 27, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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