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

Dangerous Heat and Heavy Rainfall into the Weekend

Hot temperatures and high humidity are forecast to continue across the mid-Mississippi Valley into this weekend. Heat Advisories remain in effect. Heavy to excessive rainfall occurring at times through the weekend could bring areas of flooding to parts of the northern Rockies, upper Midwest, central Great Lakes, and southern New England. Read More >

Hazardous Weather Conditions

Current conditions at

Gary Regional Airport (KGYY)

Lat: 41.61°NLon: 87.41°WElev: 584ft.

Partly Cloudy

72°F

22°C

Humidity 69%
Wind Speed NE 10 mph
Barometer 30.24 in
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Last update 18 Sep 1:50 pm CDT
Extended Forecast for

New Chicago IN

Flood Watch September 19, 04:00am until September 19, 01:00pm
Click here for hazard details and duration
Flood Watch

  • This Afternoon

    This Afternoon: A 40 percent chance of showers after 3pm. Mostly cloudy, with a high near 73. East northeast wind around 10 mph.

    High: 73 °F

    Chance
    Showers

  • Tonight

    Tonight: A slight chance of showers, then a chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 61. East southeast wind 5 to 10 mph, with gusts as high as 15 mph. Chance of precipitation is 30%.

    Low: 61 °F

    Slight Chance
    Showers then
    Chance
    T-storms

  • Saturday

    Saturday: Showers and thunderstorms, mainly before 2pm. High near 77. East southeast wind 5 to 10 mph, with gusts as high as 15 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 77 °F

    T-storms

  • Saturday Night

    Saturday Night: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 1am. Low around 65. South southeast wind around 5 mph becoming north northwest after midnight. Chance of precipitation is 80%.

    Low: 65 °F

    T-storms

  • Sunday

    Sunday: Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 70. North northeast wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.

    High: 70 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: A 50 percent chance of showers. Mostly cloudy, with a low around 55.

    Low: 55 °F

    Chance
    Showers

  • Monday

    Monday: Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 65. Chance of precipitation is 60%.

    High: 65 °F

    Showers
    Likely

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 52.

    Low: 52 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 64.

    High: 64 °F

    Partly Sunny

Detailed Forecast

This Afternoon
A 40 percent chance of showers after 3pm. Mostly cloudy, with a high near 73. East northeast wind around 10 mph.
Tonight
A slight chance of showers, then a chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 61. East southeast wind 5 to 10 mph, with gusts as high as 15 mph. Chance of precipitation is 30%.
Saturday
Showers and thunderstorms, mainly before 2pm. High near 77. East southeast wind 5 to 10 mph, with gusts as high as 15 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
Saturday Night
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 1am. Low around 65. South southeast wind around 5 mph becoming north northwest after midnight. Chance of precipitation is 80%.
Sunday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 70. North northeast wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.
Sunday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 55.
Monday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 65. Chance of precipitation is 60%.
Monday Night
Mostly cloudy, with a low around 52.
Tuesday
Partly sunny, with a high near 64.
Tuesday Night
Mostly cloudy, with a low around 52.
Wednesday
Partly sunny, with a high near 65.
Wednesday Night
Mostly cloudy, with a low around 53.
Thursday
Partly sunny, with a high near 68.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
New Chicago IN
 41.56°N 87.26°W
Last Update:
2:16 pm CDT Sep 18, 2026
Forecast Valid:
2pm CDT Sep 18, 2026-6pm CDT Sep 24, 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