National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Significant Coastal Impacts to the Mid-Atlantic and Northeast; Tropical Storm Nolo to Impact Hawaii

A strong coastal storm will bring moderate to major coastal flooding, strong winds, heavy rainfall and high surf to the Mid-Atlantic and New England. Tropical Storm Nolo is expected to strengthen into a hurricane today as it moves north toward the Big Island of Hawaii. Heavy rainfall may produce life-threatening, catastrophic flooding and mudslides. Read More >

Current conditions at

Gary Regional Airport (KGYY)

Lat: 41.61°NLon: 87.41°WElev: 584ft.

A Few Clouds

68°F

20°C

Humidity 69%
Wind Speed N 10 mph
Barometer 30.31 in
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 24 Sep 12:50 pm CDT
Extended Forecast for

Merrillville IN

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 70. East wind 5 to 10 mph.

    High: 70 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 56. East wind around 5 mph.

    Low: 56 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy, with a high near 66. East southeast wind around 5 mph becoming northeast in the afternoon.

    High: 66 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: Partly cloudy, with a low around 49. North northeast wind around 5 mph becoming calm in the evening.

    Low: 49 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 69. Calm wind becoming east around 5 mph.

    High: 69 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 51.

    Low: 51 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 69.

    High: 69 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 51.

    Low: 51 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 71.

    High: 71 °F

    Sunny

Detailed Forecast

This Afternoon
Partly sunny, with a high near 70. East wind 5 to 10 mph.
Tonight
Mostly cloudy, with a low around 56. East wind around 5 mph.
Friday
Mostly cloudy, with a high near 66. East southeast wind around 5 mph becoming northeast in the afternoon.
Friday Night
Partly cloudy, with a low around 49. North northeast wind around 5 mph becoming calm in the evening.
Saturday
Sunny, with a high near 69. Calm wind becoming east around 5 mph.
Saturday Night
Partly cloudy, with a low around 51.
Sunday
Mostly sunny, with a high near 69.
Sunday Night
Partly cloudy, with a low around 51.
Monday
Sunny, with a high near 71.
Monday Night
Mostly clear, with a low around 53.
Tuesday
Mostly sunny, with a high near 73.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 62.
Wednesday
A chance of showers. Mostly cloudy, with a high near 72.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Merrillville IN
 41.47°N 87.3°W
Last Update:
1:21 pm CDT Sep 24, 2026
Forecast Valid:
1pm CDT Sep 24, 2026-6pm CDT Sep 30, 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