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Merrillville, IN 46410 Weather

It is 54°F and cloudy in Merrillville, IN 46410, observed at 1:35 AM CDT. Today: Scattered Rain Showers, high 64°F, low 50°F. Hourly and 10-day forecast from the National Weather Service. Times are local (CDT).

Merrillville, IN 46410 current weather

54°F

Cloudy

H 64° / L 50°Feels like 54°

Observed at Gary Regional Airport (10.3 mi away), 10/31/2026, 1:35 AM CDT

Hourly forecast

NWS, updated 10/31/2026, 12:01 AM PT

  1. Now51°22%
  2. 3 AM51°24%
  3. 4 AM51°31%
  4. 5 AM51°31%
  5. 6 AM51°30%
  6. 7 AM51°23%
  7. 8 AM51°23%
  8. 9 AM54°23%
  9. 10 AM57°23%
  10. 11 AM59°20%
  11. 12 PM61°18%
  12. 1 PM62°15%
  13. 2 PM62°15%
  14. 3 PM63°16%
  15. 4 PM63°16%
  16. 5 PM63°16%
  17. 6 PM61°17%
  18. 7 PM58°17%
  19. 8 PM56°16%
  20. 9 PM55°16%
  21. 10 PM55°15%
  22. 11 PM54°15%
  23. 12 AM54°14%Sun
  24. 1 AM53°14%
  25. 1 AM52°14%
  26. 2 AM52°12%
  27. 3 AM53°11%
  28. 4 AM53°10%
  29. 5 AM53°
  30. 6 AM53°
  31. 7 AM53°
  32. 8 AM57°
  33. 9 AM61°
  34. 10 AM64°
  35. 11 AM65°10%
  36. 12 PM66°10%
  37. 1 PM66°10%
  38. 2 PM66°10%
  39. 3 PM66°10%
  40. 4 PM66°10%
  41. 5 PM63°10%
  42. 6 PM60°10%
  43. 7 PM58°10%
  44. 8 PM57°10%
  45. 9 PM57°10%
  46. 10 PM56°10%
  47. 11 PM55°10%
  48. 12 AM56°Mon

10-day forecast

Tap a day for details

  • Today10/3131% chance of precipitationLow 50°High 64°

    Saturday: Scattered rain showers. Cloudy, with a high near 64. Southeast wind 5 to 10 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.

    Overnight: Scattered rain showers. Cloudy, with a low around 50. East southeast wind around 5 mph, with gusts as high as 15 mph. Chance of precipitation is 30%.

    Scattered Rain Showers
  • Sun11/110% chance of precipitationLow 53°High 67°

    Sunday: Mostly cloudy, with a high near 67. South southeast wind around 5 mph, with gusts as high as 15 mph.

    Sunday Night: Mostly cloudy, with a low around 53. South southeast wind 5 to 10 mph.

    Mostly Cloudy
  • Mon11/233% chance of precipitationLow 57°High 66°

    Monday: A chance of rain showers after noon. Mostly cloudy, with a high near 66. Chance of precipitation is 30%.

    Monday Night: A slight chance of rain showers. Mostly cloudy, with a low around 57.

    Mostly Cloudy then Chance Rain Showers
  • Tue11/368% chance of precipitationLow 55°High 72°

    Tuesday: Rain showers likely. Mostly cloudy, with a high near 72.

    Tuesday Night: Rain showers likely. Mostly cloudy, with a low around 55.

    Rain Showers Likely
  • Wed11/455% chance of precipitationLow 47°High 66°

    Wednesday: Rain showers likely. Mostly cloudy, with a high near 66.

    Wednesday Night: A slight chance of rain showers. Mostly cloudy, with a low around 47.

    Rain Showers Likely
  • Thu11/527% chance of precipitationLow 46°High 65°

    Thursday: A chance of rain showers. Mostly sunny, with a high near 65.

    Thursday Night: A slight chance of rain showers. Mostly cloudy, with a low around 46.

    Chance Rain Showers
  • Fri11/625% chance of precipitationLow High 63°

    Friday: A chance of rain showers. Partly sunny, with a high near 63.

    Chance Rain Showers
  • Sat11/7Model blend12% chance of precipitationLow 44°High 63°

    Saturday: Partly cloudy. High near 63°. Low that night near 44°.

    Computer model guidance from the NOAA National Blend of Models, not a forecast written by NWS forecasters. Expect changes this far out.

  • Sun11/8Model blend20% chance of precipitationLow 43°High 63°

    Sunday: Mostly cloudy, slight chance of rain. High near 63°. Low that night near 43°. About 0.01 in of precipitation.

    Computer model guidance from the NOAA National Blend of Models, not a forecast written by NWS forecasters. Expect changes this far out.

  • Mon11/9Model blend23% chance of precipitationLow 42°High 64°

    Monday: Partly cloudy, slight chance of rain. High near 64°. Low that night near 42°. About 0.10 in of precipitation.

    Computer model guidance from the NOAA National Blend of Models, not a forecast written by NWS forecasters. Expect changes this far out.

Forecast for 41.477, -87.326 from the NWS LOT office, updated 10/31/2026, 12:01 AM PT · Official forecast on weather.gov

Days 8 to 10: NOAA National Blend of Models, station KGYY (Gary Intl, 10 mi), model run 10/30/2026, 9:00 PM CDT

From the National Weather Service; may be delayed. Not for life-safety decisions. In an emergency, call 911.

Next 6 hours

NWS hourly forecast

  1. Now51°Isolated Rain Showers22%5 mph
  2. 3 AM51°Isolated Rain Showers24%5 mph
  3. 4 AM51°Scattered Rain Showers31%5 mph
  4. 5 AM51°Scattered Rain Showers31%5 mph
  5. 6 AM51°Scattered Rain Showers30%5 mph
  6. 7 AM51°Isolated Rain Showers23%5 mph

Hourly details

Next 7 days: temperature chart, feels like, rain and snow amounts, sky cover, wind and gustsShow

Radar and satellite

National radar

NEXRAD (up to 24 hours) and GOES

Latest

Frequently asked questions

What is the weather in Merrillville, IN 46410 right now?
The latest observation from Gary Regional Airport was 54°F and cloudy, reported at 10/31/2026, 1:35 AM CDT.
What is the high temperature today in Merrillville, IN 46410?
The National Weather Service forecast for saturday calls for a high near 64°F. Scattered Rain Showers.
Will it rain in Merrillville, IN 46410 in the next 24 hours?
The NWS hourly forecast does not show any hour with a 50% or higher chance of precipitation in the next 24 hours.
What is the 10-day forecast for Merrillville, IN 46410?
The first 7 days come from the National Weather Service forecast. Days 8 to 10 (Nov 7 to Nov 9) come from the NOAA National Blend of Models, with highs of 63°F to 64°F. Model guidance this far out often changes.
What time is sunrise and sunset in Merrillville, IN 46410 today?
Sunrise is about 7:20 AM CDT and sunset is about 5:45 PM CDT (calculated for the center of the area, within a few minutes).
What is the normal October weather in Merrillville, IN 46410?
At Valparaiso Wtr Wks, the 1991 to 2020 normal high in October is 64°F and the normal low is 44°F.

Rain and snow totals

Next 3 days, NWS forecast grid

Rain (liquid)
0.03 in
Snow
0.00 in
Ice
0.00 in

Nearby hazards

Indiana hazards

Severe storm and flash flood outlooks, expected rain, river flooding and wildfires near this area

  • Severe storm outlook today:No thunderstorm risk area over this locationOutlook map
  • Excessive rainfall outlook (flash flood risk):Could not check the Weather Prediction Center outlook right now.
  • River gauges within 40 miles at or above flood stage: None reported
  • Active wildfires within 50 miles: None reported

UV and air quality forecast

EPA and AirNow

AQI forecast today (Hammond-Gary)
GoodOzone
AQI forecast tomorrow (Hammond-Gary)
ModeratePM2.5

UV index guide · Air quality

Drought

By county

Lake County, week of 10/27/2026

No drought or abnormal dryness in this county.

Beaches nearby

EPA BEACON beaches

Sun and moon

Local time, center of the area

Sunrise
7:20 AM
Sunset
5:45 PM
Daylight
10 hr 25 min
Moon
Waning Gibbous 73% lit
First light (civil dawn)
6:51 AM
Last light (civil dusk)
6:14 PM
Moonrise
10:41 PM
Moonset
1:25 PM

Normal October weather

Climate

Normal October high 64°, low 44°, precipitation 3.93 in for the month. 1991 to 2020 normals at Valparaiso Wtr Wks, 15 mi away.

Other places nearby

Data sources

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About this data

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