Merrillville, Indiana Weather
Honeysuckle sweetens the night. Day 90 of spring. Read this microseason across nine climate regions →
Merrillville weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 17Heavy Showers91%1.5″72°56°—
- ThursdayJun 18Overcast——70°59°-2°
- FridayJun 19Overcast——74°59°+4°
- SaturdayJun 20Drizzle12%—77°57°+3°
- SundayJun 21Light Showers59%0.46″66°58°-11°
- MondayJun 22Overcast59%—69°57°+3°
- TuesdayJun 23Overcast——78°56°+9°
AQI 38 (Good), driven by Ozone. AQI down 8 over the last 6 hours (gradual decline).
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
Trends
Seven days of AQI and PM2.5.
Hourly air-quality data from the Copernicus Atmosphere Monitoring Service, charted across the past and next several days. Dashed lines mark the AQI breakpoints at 50 (Good → Moderate) and 100 (Moderate → Unhealthy for Sensitive Groups).
A summer fog for fair, a winter fog for rain.
- Moonrise
- 7:44 AM
- Moonset
- 10:31 PM
- In sign
- ♋︎ Cancer
Honeysuckle sweetens the night
Merrillville at a glance
- Today vs. normal: 14°F below the seasonal normal for this latitude
- Last frost: April 25 (climatological average for this latitude)
- Microseason: Jun 16–20
- Planting window: Stake and prune tomato suckers. Watch for squash vine borers.
15-Day Forecast — Merrillville
- Wed72°57°91%
- Thu70°59°4%
- Fri74°59°4%
- Sat77°57°12%
- Sun66°58°59%
- Mon69°57°59%
- Tue78°56°6%
- Wed80°61°12%
- Thu85°65°17%
- Fri82°68°21%
- Sat91°70°27%
- Sun92°73°32%
- Mon87°73°45%
- Tue91°76°37%
- Wed80°67°25%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of June 17, the growing season is at its peak — frost is months away. Continue succession-planting beans and summer squash. Start fall brassicas (broccoli, cabbage, kale) from seed indoors for transplanting in late summer.
SPC Convective Outlook
Storm Prediction Center — Merrillville
SPC has placed Merrillville in the Enhanced Risk category for severe thunderstorms tomorrow.
- TODAYTSTMGeneral Thunderstorms
- TOMORROWENHEnhanced Risk
- DAY 3NONENo severe risk
Numerous severe storms likely. Tornadoes, large hail, and damaging wind gusts possible across the area. Track NWS warnings if storms develop.
Source: NOAA / NWS Storm Prediction Center categorical convective outlook. Outlooks are re-issued multiple times per day; this page reflects the most recent SPC polygons covering the city’s coordinates.
ZIP codes in Merrillville
- 46307
- 46410
- 46401
- 46411