National Weather Service Forecast for: 3 Miles NW Merrillville IN
Issued by: National Weather Service Chicago, IL
Updated: 11:36 pm CST Dec 16, 2025
 
Tonight

Tonight: Mostly cloudy, with a low around 31. West southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Mostly Cloudy

 Wednesday

Wednesday: Mostly sunny, with a high near 41. West wind 5 to 10 mph becoming south southeast in the afternoon.
Mostly Sunny

 Wednesday
Night
Wednesday Night: A 50 percent chance of showers or drizzle after midnight. Mostly cloudy, with a temperature rising to around 41 by 5am. South wind 10 to 15 mph, with gusts as high as 30 mph.
Mostly Cloudy
then Chance
Showers
 Thursday

Thursday: Rain, mainly before 3pm, then a slight chance of showers after 3pm. High near 48. Breezy, with a south wind 15 to 20 mph becoming west in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 100%.
Breezy. Rain
then Rain
Likely
 Thursday
Night
Thursday Night: A chance of snow showers between 9pm and midnight, then a chance of flurries with a slight chance of snow showers after midnight. Mostly cloudy, with a low around 19. Breezy, with a west wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 30%.
Chance Snow
Showers and
Breezy
 Friday

Friday: Partly sunny, with a high near 28.
Partly Sunny

 Friday
Night
Friday Night: Mostly cloudy, with a low around 23.
Mostly Cloudy

 Saturday

Saturday: Mostly cloudy, with a high near 44.
Mostly Cloudy

 Saturday
Night
Saturday Night: Partly cloudy, with a low around 23.
Partly Cloudy
Lo 31 °F Hi 41 °F Lo 32 °F⇑ Hi 48 °F Lo 19 °F Hi 28 °F Lo 23 °F Hi 44 °F Lo 23 °F

 

Tonight
 
 Mostly cloudy, with a low around 31. West southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Wednesday
 
 Mostly sunny, with a high near 41. West wind 5 to 10 mph becoming south southeast in the afternoon.
Wednesday Night
 
 A 50 percent chance of showers or drizzle after midnight. Mostly cloudy, with a temperature rising to around 41 by 5am. South wind 10 to 15 mph, with gusts as high as 30 mph.
Thursday
 
 Rain, mainly before 3pm, then a slight chance of showers after 3pm. High near 48. Breezy, with a south wind 15 to 20 mph becoming west in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 100%.
Thursday Night
 
 A chance of snow showers between 9pm and midnight, then a chance of flurries with a slight chance of snow showers after midnight. Mostly cloudy, with a low around 19. Breezy, with a west wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 30%.
Friday
 
 Partly sunny, with a high near 28.
Friday Night
 
 Mostly cloudy, with a low around 23.
Saturday
 
 Mostly cloudy, with a high near 44.
Saturday Night
 
 Partly cloudy, with a low around 23.
Sunday
 
 Mostly sunny, with a high near 32.
Sunday Night
 
 Mostly cloudy, with a low around 23.
Monday
 
 Partly sunny, with a high near 37.
Monday Night
 
 Mostly cloudy, with a low around 30.
Tuesday
 
 Partly sunny, with a high near 44.

 

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