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.

Mostly Cloudy

64°F

18°C

Humidity 43%
Wind Speed SW 7 mph
Barometer 30.17 in
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Last update 9 Apr 11:50 am CDT
Extended Forecast for

Merrillville IN

  • This Afternoon

    This Afternoon: A chance of showers before 4pm, then a slight chance of showers and thunderstorms between 4pm and 5pm, then a slight chance of showers after 5pm. Mostly cloudy, with a high near 69. West wind 5 to 10 mph. Chance of precipitation is 30%.

    High: 69 °F

    Chance
    Showers

  • Tonight

    Tonight: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 10pm. Low around 45. North wind 5 to 10 mph becoming south southeast after midnight. Winds could gust as high as 15 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 45 °F

    Showers

  • Friday

    Friday: Showers, mainly before 1pm. Steady temperature around 49. North wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 49 °F

    Showers

  • Friday Night

    Friday Night: Mostly clear, with a low around 35. North northeast wind 5 to 10 mph.

    Low: 35 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 62. East wind 5 to 10 mph.

    High: 62 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A 20 percent chance of showers. Mostly cloudy, with a low around 52.

    Low: 52 °F

    Slight Chance
    Showers

  • Sunday

    Sunday: A 20 percent chance of showers after 1pm. Mostly cloudy, with a high near 77. Breezy.

    High: 77 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers and
    Breezy

  • Sunday Night

    Sunday Night: Showers likely. Cloudy, with a low around 62.

    Low: 62 °F

    Showers
    Likely

  • Monday

    Monday: A chance of showers. Mostly cloudy, with a high near 79.

    High: 79 °F

    Chance
    Showers

Detailed Forecast

This Afternoon
A chance of showers before 4pm, then a slight chance of showers and thunderstorms between 4pm and 5pm, then a slight chance of showers after 5pm. Mostly cloudy, with a high near 69. West wind 5 to 10 mph. Chance of precipitation is 30%.
Tonight
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 10pm. Low around 45. North wind 5 to 10 mph becoming south southeast after midnight. Winds could gust as high as 15 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
Friday
Showers, mainly before 1pm. Steady temperature around 49. North wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday Night
Mostly clear, with a low around 35. North northeast wind 5 to 10 mph.
Saturday
Mostly sunny, with a high near 62. East wind 5 to 10 mph.
Saturday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 52.
Sunday
A 20 percent chance of showers after 1pm. Mostly cloudy, with a high near 77. Breezy.
Sunday Night
Showers likely. Cloudy, with a low around 62.
Monday
A chance of showers. Mostly cloudy, with a high near 79.
Monday Night
A chance of showers. Mostly cloudy, with a low around 64.
Tuesday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 77.
Tuesday Night
Showers and possibly a thunderstorm. Mostly cloudy, with a low around 52.
Wednesday
A chance of showers. Mostly cloudy, with a high near 66.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Merrillville IN
 41.49°N 87.32°W
Last Update:
10:57 am CDT Apr 9, 2026
Forecast Valid:
12pm CDT Apr 9, 2026-6pm CDT Apr 15, 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