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.

Overcast

64°F

18°C

Humidity 100%
Wind Speed Calm
Barometer 30.03 in
Dewpoint 64°F (18°C)
Visibility 3.00 mi
Last update 14 Oct 7:50 am CDT
Extended Forecast for

Merrillville IN

  • Today

    Today: Scattered showers, mainly before 10am. Mostly cloudy, with a high near 65. North northeast wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.

    High: 65 °F

    Scattered
    Showers

  • Tonight

    Tonight: A 20 percent chance of rain after 4am. Mostly cloudy, with a low around 56. North northeast wind 5 to 10 mph, with gusts as high as 15 mph.

    Low: 56 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Thursday

    Thursday: A chance of rain, then rain and possibly a thunderstorm after 1pm. High near 62. East southeast wind 5 to 10 mph, with gusts as high as 15 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

    High: 62 °F

    Chance Rain
    then Rain

  • Thursday Night

    Thursday Night: Rain and possibly a thunderstorm before 1am, then rain likely. Low around 52. South southeast wind 5 to 15 mph becoming northwest after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 90%.

    Low: 52 °F

    Rain

  • Friday

    Friday: A 50 percent chance of rain. Partly sunny, with a high near 56. Breezy, with a northwest wind 15 to 20 mph, with gusts as high as 35 mph.

    High: 56 °F

    Chance Rain
    and Breezy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 44. Breezy.

    Low: 44 °F

    Mostly Cloudy
    and Breezy
    then Partly
    Cloudy

  • Saturday

    Saturday: Sunny, with a high near 56.

    High: 56 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 39.

    Low: 39 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 66.

    High: 66 °F

    Sunny

Detailed Forecast

Today
Scattered showers, mainly before 10am. Mostly cloudy, with a high near 65. North northeast wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.
Tonight
A 20 percent chance of rain after 4am. Mostly cloudy, with a low around 56. North northeast wind 5 to 10 mph, with gusts as high as 15 mph.
Thursday
A chance of rain, then rain and possibly a thunderstorm after 1pm. High near 62. East southeast wind 5 to 10 mph, with gusts as high as 15 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Thursday Night
Rain and possibly a thunderstorm before 1am, then rain likely. Low around 52. South southeast wind 5 to 15 mph becoming northwest after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 90%.
Friday
A 50 percent chance of rain. Partly sunny, with a high near 56. Breezy, with a northwest wind 15 to 20 mph, with gusts as high as 35 mph.
Friday Night
Mostly cloudy, with a low around 44. Breezy.
Saturday
Sunny, with a high near 56.
Saturday Night
Clear, with a low around 39.
Sunday
Sunny, with a high near 66.
Sunday Night
Partly cloudy, with a low around 46.
Monday
Partly sunny, with a high near 68.
Monday Night
Partly cloudy, with a low around 47.
Tuesday
Sunny, with a high near 71.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Merrillville IN
 41.47°N 87.33°W
Last Update:
5:46 am CDT Oct 14, 2026
Forecast Valid:
8am CDT Oct 14, 2026-6pm CDT Oct 20, 2026
 
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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