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.

Partly Cloudy

59°F

15°C

Humidity 72%
Wind Speed NE 7 mph
Barometer 29.98 in
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Last update 22 May 5:50 pm CDT
Extended Forecast for

Merrillville IN

  • Tonight

    Tonight: Showers likely, mainly after 4am. Cloudy, with a low around 56. East wind 5 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 56 °F

    Slight Chance
    Showers then
    Showers
    Likely

  • Saturday

    Saturday: A 30 percent chance of showers, mainly before 8am. Mostly cloudy, with a high near 67. North wind 5 to 10 mph.

    High: 67 °F

    Chance
    Showers then
    Partly Sunny

  • Saturday Night

    Saturday Night: A 20 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 54. North northeast wind 5 to 10 mph becoming light and variable in the evening.

    Low: 54 °F

    Partly Cloudy
    then Slight
    Chance
    T-storms

  • Sunday

    Sunday: A 50 percent chance of showers and thunderstorms, mainly before 1pm. Partly sunny, with a high near 75. South southeast wind around 5 mph becoming north northwest in the afternoon.

    High: 75 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 56. East northeast wind around 5 mph becoming calm in the evening.

    Low: 56 °F

    Partly Cloudy

  • Memorial Day

    Memorial Day: Sunny, with a high near 81.

    High: 81 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 59.

    Low: 59 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 84.

    High: 84 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 62.

    Low: 62 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Showers likely, mainly after 4am. Cloudy, with a low around 56. East wind 5 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday
A 30 percent chance of showers, mainly before 8am. Mostly cloudy, with a high near 67. North wind 5 to 10 mph.
Saturday Night
A 20 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 54. North northeast wind 5 to 10 mph becoming light and variable in the evening.
Sunday
A 50 percent chance of showers and thunderstorms, mainly before 1pm. Partly sunny, with a high near 75. South southeast wind around 5 mph becoming north northwest in the afternoon.
Sunday Night
Partly cloudy, with a low around 56. East northeast wind around 5 mph becoming calm in the evening.
Memorial Day
Sunny, with a high near 81.
Monday Night
Partly cloudy, with a low around 59.
Tuesday
Mostly sunny, with a high near 84.
Tuesday Night
Mostly cloudy, with a low around 62.
Wednesday
Partly sunny, with a high near 82.
Wednesday Night
Mostly cloudy, with a low around 60.
Thursday
Mostly sunny, with a high near 78.
Thursday Night
Partly cloudy, with a low around 58.
Friday
Mostly sunny, with a high near 78.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Merrillville IN
 41.47°N 87.33°W
Last Update:
2:46 pm CDT May 22, 2026
Forecast Valid:
6pm CDT May 22, 2026-6pm CDT May 29, 2026
 
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Additional Resources

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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