National Weather Service Forecast for: 3 Miles NW Merrillville IN
Issued by: National Weather Service Chicago, IL
Updated: 1:50 am CST Dec 5, 2025
 
Overnight

Overnight: Patchy freezing fog. Partly cloudy, with a low around 4. Wind chill values as low as -8. South wind 5 to 10 mph.
Patchy
Freezing Fog

 Friday

Friday: Areas of freezing fog before 9am. Partly sunny, with a high near 26. Wind chill values as low as -6. South southwest wind 10 to 15 mph, with gusts as high as 20 mph.
Areas
Freezing Fog
then Mostly
Sunny
 Friday
Night
Friday Night: Patchy snow and freezing rain after 9pm. Mostly cloudy, with a temperature rising to around 30 by 1am. South southwest wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 30%.
Patchy Wintry
Mix

 Saturday

Saturday: Mostly cloudy, with a high near 29. West wind around 5 mph becoming calm in the afternoon. Winds could gust as high as 15 mph.
Mostly Cloudy

 Saturday
Night
Saturday Night: Snow likely after midnight. Cloudy, with a low around 20. Calm wind becoming southeast around 5 mph. Chance of precipitation is 60%.
Mostly Cloudy
then Snow
Likely
 Sunday

Sunday: Snow likely, mainly before noon. Mostly cloudy, with a high near 31. Chance of precipitation is 70%.
Snow Likely
then Slight
Chance Snow
 Sunday
Night
Sunday Night: A 20 percent chance of snow showers before midnight. Mostly cloudy, with a low around 9.
Slight Chance
Snow Showers
then Mostly
Cloudy
 Monday

Monday: Partly sunny, with a high near 21.
Partly Sunny

 Monday
Night
Monday Night: A chance of snow after midnight. Mostly cloudy, with a low around 13.
Mostly Cloudy
then Chance
Snow
Lo 4 °F Hi 26 °F Lo 24 °F⇑ Hi 29 °F Lo 20 °F Hi 31 °F Lo 9 °F Hi 21 °F Lo 13 °F

Hydrologic Outlook
Hazardous Weather Outlook
 

Overnight
 
 Patchy freezing fog. Partly cloudy, with a low around 4. Wind chill values as low as -8. South wind 5 to 10 mph.
Friday
 
 Areas of freezing fog before 9am. Partly sunny, with a high near 26. Wind chill values as low as -6. South southwest wind 10 to 15 mph, with gusts as high as 20 mph.
Friday Night
 
 Patchy snow and freezing rain after 9pm. Mostly cloudy, with a temperature rising to around 30 by 1am. South southwest wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 30%.
Saturday
 
 Mostly cloudy, with a high near 29. West wind around 5 mph becoming calm in the afternoon. Winds could gust as high as 15 mph.
Saturday Night
 
 Snow likely after midnight. Cloudy, with a low around 20. Calm wind becoming southeast around 5 mph. Chance of precipitation is 60%.
Sunday
 
 Snow likely, mainly before noon. Mostly cloudy, with a high near 31. Chance of precipitation is 70%.
Sunday Night
 
 A 20 percent chance of snow showers before midnight. Mostly cloudy, with a low around 9.
Monday
 
 Partly sunny, with a high near 21.
Monday Night
 
 A chance of snow after midnight. Mostly cloudy, with a low around 13.
Tuesday
 
 Mostly cloudy, with a high near 35.
Tuesday Night
 
 Rain and snow likely. Cloudy, with a low around 30.
Wednesday
 
 Rain and snow likely. Cloudy, with a high near 35.
Wednesday Night
 
 A chance of snow. Mostly cloudy, with a low around 16.
Thursday
 
 A chance of snow. Partly sunny, with a high near 24.

 

Forecast from NOAA-NWS for 3 Miles NW Merrillville IN.