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.

Fog/Mist

43°F

6°C

Humidity 100%
Wind Speed Calm
Barometer 30.02 in
Dewpoint 43°F (6°C)
Visibility 6.00 mi
Last update 10 Nov 8:50 pm CST
Extended Forecast for

Merrillville IN

  • Tonight

    Tonight: Patchy fog. Otherwise, mostly cloudy, with a low around 39. Calm wind becoming south around 5 mph.

    Low: 39 °F

    Patchy Fog

  • Veterans Day

    Veterans Day: Scattered showers after noon. Mostly cloudy, with a high near 56. Light and variable wind becoming north northeast 5 to 10 mph in the morning. Winds could gust as high as 15 mph. Chance of precipitation is 50%.

    High: 56 °F

    Mostly Cloudy
    then
    Scattered
    Showers

  • Wednesday Night

    Wednesday Night: A 50 percent chance of showers. Mostly cloudy, with a low around 40. North northwest wind 10 to 15 mph.

    Low: 40 °F

    Chance
    Showers

  • Thursday

    Thursday: Showers. High near 46. North wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 80%.

    High: 46 °F

    Showers

  • Thursday Night

    Thursday Night: Rain showers likely before midnight, then rain and snow showers likely. Mostly cloudy, with a low around 34. Northwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 70%.

    Low: 34 °F

    Showers
    Likely then
    Rain/Snow
    Likely

  • Friday

    Friday: Rain and snow showers likely, becoming all rain after noon. Partly sunny, with a high near 42. Chance of precipitation is 70%.

    High: 42 °F

    Rain/Snow
    Likely then
    Showers
    Likely

  • Friday Night

    Friday Night: A chance of rain showers before midnight, then a chance of rain and snow showers between midnight and 3am, then a chance of snow showers after 3am. Mostly cloudy, with a low around 31. Chance of precipitation is 40%.

    Low: 31 °F

    Chance
    Showers then
    Chance
    Rain/Snow

  • Saturday

    Saturday: Mostly sunny, with a high near 44.

    High: 44 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 30.

    Low: 30 °F

    Partly Cloudy

Detailed Forecast

Tonight
Patchy fog. Otherwise, mostly cloudy, with a low around 39. Calm wind becoming south around 5 mph.
Veterans Day
Scattered showers after noon. Mostly cloudy, with a high near 56. Light and variable wind becoming north northeast 5 to 10 mph in the morning. Winds could gust as high as 15 mph. Chance of precipitation is 50%.
Wednesday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 40. North northwest wind 10 to 15 mph.
Thursday
Showers. High near 46. North wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 80%.
Thursday Night
Rain showers likely before midnight, then rain and snow showers likely. Mostly cloudy, with a low around 34. Northwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 70%.
Friday
Rain and snow showers likely, becoming all rain after noon. Partly sunny, with a high near 42. Chance of precipitation is 70%.
Friday Night
A chance of rain showers before midnight, then a chance of rain and snow showers between midnight and 3am, then a chance of snow showers after 3am. Mostly cloudy, with a low around 31. Chance of precipitation is 40%.
Saturday
Mostly sunny, with a high near 44.
Saturday Night
Partly cloudy, with a low around 30.
Sunday
Mostly sunny, with a high near 47.
Sunday Night
Partly cloudy, with a low around 32.
Monday
Mostly sunny, with a high near 49.
Monday Night
Mostly clear, with a low around 34.
Tuesday
Sunny, with a high near 51.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Merrillville IN
 41.47°N 87.33°W
Last Update:
8:41 pm CST Nov 10, 2026
Forecast Valid:
9pm CST Nov 10, 2026-6pm CST Nov 17, 2026
 
Forecast Discussion
 
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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