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Merrillville, IN Weather
Current conditions
Observed at Gary Regional Airport · 1 hr ago
Forecast
10-day-
Tonight
Partly cloudy. Low around 47, with temperatures rising to around 49 overnight. South southeast wind around 5 mph.
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Sunday
Mostly sunny. High near 74, with temperatures falling to around 72 in the afternoon. South wind 0 to 5 mph.
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Sunday Night
Partly cloudy, with a low around 50. South wind around 0 mph.
National Weather Service forecast updated 10 hrs ago.
Hourly
Hourly forecast- Now62°
- 8 PM59°
- 9 PM57°
- 10 PM56°
- 11 PM55°
- Sun12 AM53°
- 1 AM52°
- 2 AM51°
- 3 AM50°
- 4 AM49°
- 5 AM49°
- 6 AM48°
- 7 AM47°
- 8 AM49°
- 9 AM55°
- 10 AM60°
- 11 AM65°
- 12 PM68°
- 1 PM71°
- 2 PM73°
- 3 PM74°
- 4 PM74°
- 5 PM72°
- 6 PM68°
10-day forecast
Details- TodayOct 24Mostly Sunny47°71°
- SunOct 25Mostly Sunny50°74°
- MonOct 26Partly Sunny49°68°
- TueOct 27Mostly Cloudy51°69°
- WedOct 28Mostly Sunny54°74°
- ThuOct 29Mostly Sunny49°71°
- FriOct 30Slight Chance Rain Showers19%49°69°
- SatOct 31Cloudy54°72°
- SunNov 1Heavy rain0.68 in59°65°
- MonNov 2Heavy rain0.61 in60°70°
Days after the National Weather Service's seven are MET Norway's outlook, a computer model with no forecaster's review.
Radar
Full mapWeather news in Indiana
More weather news-
Extended dry pattern anchors central Indiana through early next week | Oct. 21, 2026INDIANAPOLIS (WISH) — Our mild and quiet stretch continues, with sunny skies and highs in the 70s for the next several days. The most significant weather concern through the workweek will be localized fog forming during…
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Farmer’s Almanac Drops Thanksgiving Forecast and If It’s Correct, Folks in Indiana & Kentucky Should Get Their Snow Shovels ReadyIn the past several years, Thanksgiving weather has been pretty warm. I don't recall the last time I saw snow on Thanksgiving in the Tri-State. We even spent Thanksgiving outside like a picnic a few years ago because it…
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Frost in Indiana could impact corn yields in isolated areasPurdue Extension’s corn specialist says the state’s first frost of the season could have an impact on corn yields. Dan Quinn tells Brownfield, “If the crop hasn’t reached maturity yet, then we have impacts from both…
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Cold Weather Brings a Hidden Danger for Indiana DriversOne simple habit and just a few seconds of your time each morning could help protect Indiana's critters and save you a lot of heartache this winter. With colder weather finally returning to Indiana, it's time for a…
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Warming Trend Arrives Across Central Indiana This WeekA warming trend is taking hold today, with temperatures rising steadily over the coming days. The 13Weather Blog breaks down how the change will shape conditions across the Indianapolis area. Expect milder afternoons…
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Overnight Frost Advisory for parts of Illinois, NW IndianaCBS News Colorado 10pm Saturday CBS News Detroit Weekend 11pm CBS News Los Angeles Weekend 9pm CBS News Philadelphia Weekend 11pm KDKA News Weekend 11pm CBS News Texas Weekend 10pm
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Dangerous Freeze Warnings for 38 Counties in Indiana as Temperatures PlummetFreeze Warnings are in effect for 38 counties in Indiana from early Sunday morning, with lows as cold as 30 degrees expected. The warnings cover central, northern, east central and southeast Indiana. Three National…
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Frost Advisory Saturday night for Kentucky, southern IndianaWHAS11 Frost Advisory Saturday night for Kentucky, southern Indiana Cover any sensitive vegetation in a cloth and bring in potted plants. The last time Louisville has a freeze was March 18, 2026. The normal first frost…
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Octobers with the most precipitation in Indiana since 1895Published on Oct 5, 2026·Stacker Stacker compiled a ranking of the wettest Octobers in Indiana since 1895 using data from the National Centers for Environmental Information. Rankings are based on the highest total…
Air quality
Acceptable. Unusually sensitive people should consider limiting prolonged outdoor exertion.
Forecast
- SatModerate
- SunModerate
Hammond-Gary, IN reporting area · 1 hr ago. Data from AirNow (EPA and its state, local and tribal partners); preliminary and subject to change.
Sun & moon
Almanac
MonthlyPark Forest Water, records since 1952. Normals 1991–2020. Data from NOAA's Regional Climate Centers (ACIS).
Nearby
- Chicago 49 km
- Cicero 53 km
- Hammond 18 km
- Gary 12 km
- Orland Park 46 km
- Tinley Park 39 km
- Oak Lawn 44 km
- Berwyn 56 km
- Oak Park 58 km
- Calumet City 22 km
- Portage 17 km
- Valparaiso 23 km
Forecasters' discussion
From the National Weather Service office in LOT, issued 13 hrs ago
Key Messages
- Precipitation free, unseasonably warm weather will continue through this weekend, with temperatures continuing to generally run above average through next week.
- Chances for any meaningful rainfall are low through next workweek.
Discussion
Issued at 241 AM CDT Sat Oct 24 2026
There's not a lot to speak on for this weekend as our stretch of dry, mild weather continues. Temperatures early this morning are in the 40s and 50s with mostly clear skies now giving way to a high cloud deck filling in from the west. Some patchy fog is beginning to blossom around parts of SE WI and north-central IN. Patchy coverage is expected to spread into portions of our CWA prior to daybreak, primarily across parts of NW Indiana as well as in Lake Co, IL. While dense fog is not a widespread concern, localized pockets of some denser fog will certainly be possible through early morning, especially in Lake Co, IL. Otherwise, expect another pleasant late October day today with highs forecast in the lower 70s and a fair mix of mid-high clouds and sunshine.
Tomorrow is anticipated to be slightly warmer with lower to middle 70s in the forecast. A weakly-forced cold front will drop through the area from the north late Sunday into Monday. While we're not expecting any rain out of this, it will cool things off slightly for Monday and Tuesday. Monday, given that the front will be pushing north to south across our area into the daytime, is expected to see high temperatures range from the lower and middle 60s in our north to the 70 farther south. 60s and lower 70s will persist through the week with rain-free conditions favored through at least mid-week. A series of waves is then progged to traverse the region and possibly provide us with some rain late in the week and into next weekend.
Doom
Aviation
Issued at 609 AM CDT Sat Oct 24 2026
There are no significant aviation weather concerns anticipated through the period.
Surface high pressure will center over New England today into tonight as a cold front shifts eastward from the PLains into the Upper Midwest. Overall, this will result in light south- southeasterly surface winds across the terminal airspace today and tonight, before directions turn south-southwesterly during the day Sunday. VFR conditions will prevail through the period, though higher level cloud cover can be expected.
KJB
Lot Watches
IL...None. IN...None. LM...None.
Forecasts, observations and alerts in the United States come from the National Weather Service (NOAA); radar from NOAA's Multi-Radar Multi-Sensor system; satellite imagery from NASA's Global Imagery Browse Services (GIBS) and NOAA's GOES satellites; the map from the U.S. Geological Survey's National Map; air quality from AirNow (EPA and its partners); hurricane information from the National Hurricane Center; climate normals and records from NOAA's Regional Climate Centers (ACIS). Forecasts outside the United States and the UV index: MET Norway (CC BY 4.0); observations outside the U.S.: airport reports via NOAA's Aviation Weather Center. Place names: GeoNames (CC BY 4.0). Data are copied on a schedule and may lag the sources; for warnings that affect your safety, follow your local National Weather Service office and emergency officials. Weather news is drawn from the 4Conservative index and reflects what the press published. Terms of use.