National Weather Service Forecast for: 3 Miles NW Merrillville IN
Issued by: National Weather Service Chicago, IL
Updated: 3:01 am CDT Jun 22, 2026
 
Overnight

Overnight: A 50 percent chance of showers. Cloudy, with a steady temperature around 61. Northeast wind around 15 mph, with gusts as high as 25 mph.
Chance
Showers
 Monday

Monday: A 10 percent chance of showers before 7am. Cloudy through mid morning, then gradual clearing, with a high near 67. North northeast wind around 15 mph, with gusts as high as 25 mph.
Slight Chance
Showers then
Mostly Sunny
 Monday
Night
Monday Night: Mostly clear, with a low around 54. North wind 5 to 10 mph, with gusts as high as 20 mph.
Mostly Clear

 Tuesday

Tuesday: Sunny, with a high near 70. North wind around 5 mph, with gusts as high as 10 mph.
Sunny

 Tuesday
Night
Tuesday Night: Partly cloudy, with a low around 55. Northeast wind around 5 mph becoming calm in the evening.
Partly Cloudy

 Wednesday

Wednesday: A 40 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 77.
Mostly Sunny
then Chance
T-storms
 Wednesday
Night
Wednesday Night: A chance of showers and thunderstorms before 1am, then a slight chance of showers. Partly cloudy, with a low around 60. Chance of precipitation is 50%.
Chance
T-storms
 Thursday

Thursday: Mostly sunny, with a high near 76.
Mostly Sunny

 Thursday
Night
Thursday Night: Partly cloudy, with a low around 59.
Partly Cloudy
Lo 61 °F Hi 67 °F Lo 54 °F Hi 70 °F Lo 55 °F Hi 77 °F Lo 60 °F Hi 76 °F Lo 59 °F

Flood Warning
Beach Hazards Statement
Hazardous Weather Outlook
 

Overnight
 
 A 50 percent chance of showers. Cloudy, with a steady temperature around 61. Northeast wind around 15 mph, with gusts as high as 25 mph.
Monday
 
 A 10 percent chance of showers before 7am. Cloudy through mid morning, then gradual clearing, with a high near 67. North northeast wind around 15 mph, with gusts as high as 25 mph.
Monday Night
 
 Mostly clear, with a low around 54. North wind 5 to 10 mph, with gusts as high as 20 mph.
Tuesday
 
 Sunny, with a high near 70. North wind around 5 mph, with gusts as high as 10 mph.
Tuesday Night
 
 Partly cloudy, with a low around 55. Northeast wind around 5 mph becoming calm in the evening.
Wednesday
 
 A 40 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 77.
Wednesday Night
 
 A chance of showers and thunderstorms before 1am, then a slight chance of showers. Partly cloudy, with a low around 60. Chance of precipitation is 50%.
Thursday
 
 Mostly sunny, with a high near 76.
Thursday Night
 
 Partly cloudy, with a low around 59.
Friday
 
 Mostly sunny, with a high near 76.
Friday Night
 
 Mostly cloudy, with a low around 60.
Saturday
 
 Partly sunny, with a high near 79.
Saturday Night
 
 A chance of showers and thunderstorms. Mostly cloudy, with a low around 64.
Sunday
 
 Mostly sunny, with a high near 87.

 

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