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

Lansing Municipal Airport (KIGQ)

Lat: 41.54°NLon: 87.53°WElev: 607ft.

Light Rain

66°F

19°C

Humidity 95%
Wind Speed NE 5 mph
Barometer 29.94 in
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Last update 20 Sep 11:55 am CDT
Extended Forecast for

Munster IN

Flood Watch September 20, 12:09pm until September 20, 01:00pm
Click here for hazard details and duration
...
  •  
    Flood Watch September 20, 12:09pm until September 20, 01:00pm

    NOW until 1:00pm Sun

    Flood Watch

  • This Afternoon

    High: 65 °F

    Showers

  • Tonight

    Tonight: A 50 percent chance of showers, mainly before 4am. Cloudy, with a low around 57. East northeast wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 57 °F

    Chance
    Showers

  • Monday

    Monday: A 30 percent chance of showers, mainly between 7am and 9am. Mostly cloudy, with a high near 65. East northeast wind around 15 mph, with gusts as high as 25 mph.

    High: 65 °F

    Chance
    Showers

  • Monday Night

    Monday Night: A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 54. Northeast wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 54 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Tuesday

    Tuesday: A 20 percent chance of showers before 1pm. Mostly cloudy, with a high near 62. Northeast wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 62 °F

    Slight Chance
    Showers

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 53.

    Low: 53 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 64.

    High: 64 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 53.

    Low: 53 °F

    Mostly Cloudy

Detailed Forecast

This Afternoon
Showers before 1pm, then showers and possibly a thunderstorm between 1pm and 4pm, then showers likely after 4pm. Steady temperature around 65. Northeast wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Tonight
A 50 percent chance of showers, mainly before 4am. Cloudy, with a low around 57. East northeast wind 10 to 15 mph, with gusts as high as 25 mph.
Monday
A 30 percent chance of showers, mainly between 7am and 9am. Mostly cloudy, with a high near 65. East northeast wind around 15 mph, with gusts as high as 25 mph.
Monday Night
A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 54. Northeast wind 10 to 15 mph, with gusts as high as 20 mph.
Tuesday
A 20 percent chance of showers before 1pm. Mostly cloudy, with a high near 62. Northeast wind 10 to 15 mph, with gusts as high as 25 mph.
Tuesday Night
Mostly cloudy, with a low around 53.
Wednesday
Partly sunny, with a high near 64.
Wednesday Night
Mostly cloudy, with a low around 53.
Thursday
Partly sunny, with a high near 65.
Thursday Night
Mostly cloudy, with a low around 54.
Friday
Mostly sunny, with a high near 68.
Friday Night
Partly cloudy, with a low around 53.
Saturday
Mostly sunny, with a high near 71.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Munster IN
 41.54°N 87.5°W
Last Update:
11:41 am CDT Sep 20, 2026
Forecast Valid:
12pm CDT Sep 20, 2026-6pm CDT Sep 26, 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