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.

Fair

63°F

17°C

Humidity 45%
Wind Speed SW 8 mph
Barometer 30.04 in
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Last update 9 Nov 2:50 pm CST
Extended Forecast for

Merrillville IN

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 60. South southwest wind around 5 mph, with gusts as high as 10 mph.

    High: 60 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 43. South southwest wind around 5 mph becoming west after midnight. Winds could gust as high as 15 mph.

    Low: 43 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 59. West northwest wind around 5 mph becoming calm in the afternoon.

    High: 59 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 38. Calm wind.

    Low: 38 °F

    Partly Cloudy

  • Veterans Day

    Veterans Day: A 40 percent chance of rain after noon. Mostly cloudy, with a high near 56. Light and variable wind becoming north 5 to 10 mph in the afternoon.

    High: 56 °F

    Mostly Cloudy
    then Chance
    Rain

  • Wednesday Night

    Wednesday Night: A 50 percent chance of rain. Mostly cloudy, with a low around 41.

    Low: 41 °F

    Chance Rain

  • Thursday

    Thursday: Rain likely. Mostly cloudy, with a high near 46. Chance of precipitation is 70%.

    High: 46 °F

    Rain Likely

  • Thursday Night

    Thursday Night: Rain. Mostly cloudy, with a low around 34.

    Low: 34 °F

    Rain

  • Friday

    Friday: Rain and snow, becoming all rain after 9am. Mostly cloudy, with a high near 41.

    High: 41 °F

    Rain/Snow
    then Rain
    Likely

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 60. South southwest wind around 5 mph, with gusts as high as 10 mph.
Tonight
Mostly clear, with a low around 43. South southwest wind around 5 mph becoming west after midnight. Winds could gust as high as 15 mph.
Tuesday
Sunny, with a high near 59. West northwest wind around 5 mph becoming calm in the afternoon.
Tuesday Night
Partly cloudy, with a low around 38. Calm wind.
Veterans Day
A 40 percent chance of rain after noon. Mostly cloudy, with a high near 56. Light and variable wind becoming north 5 to 10 mph in the afternoon.
Wednesday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 41.
Thursday
Rain likely. Mostly cloudy, with a high near 46. Chance of precipitation is 70%.
Thursday Night
Rain. Mostly cloudy, with a low around 34.
Friday
Rain and snow, becoming all rain after 9am. Mostly cloudy, with a high near 41.
Friday Night
A chance of rain before midnight. Mostly cloudy, with a low around 31.
Saturday
Mostly sunny, with a high near 44.
Saturday Night
Mostly clear, with a low around 32.
Sunday
Sunny, with a high near 48.
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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 CST Nov 9, 2026
Forecast Valid:
3pm CST Nov 9, 2026-6pm CST Nov 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