See exactly when rain will start and stop with a minute-by-minute precipitation nowcast for the next hour.
22°
Mostly Cloudy
Feels Like: 7°
Min: 19°
Max: 33°
The next few hours will be overcast, with today reaching 33°C and dropping to 12°C. The coming days will be drizzle
Compare today's weather with yesterday's data and track temperature trends over time.
Hourly Forecast
Daylight Hours
06:35
Sunrise
18:51
Sunset
Moon
Waxing Crescent
11:29
Moonrise
20:22
Moonset
Daily Forecast
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Wednesday
Thursday
Friday
Saturday
Sunday
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Thursday
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Weather in Merrillville today, September 15, 2026
Cloud cover dominates in Merrillville on September 15, 2026, keeping sunshine limited. Expect a grey, overcast feel rather than long bright spells. Expect a grey start, with morning cloud around 94% by 09:00. Outdoor plans early on should not rely on bright skies.
The day peaks near 33°C and cools toward 19°C. Moisture in the air spans 48%-92%, with the highest values around 22:00. Airflow remains manageable, reaching about 6.6 km/h around 09:00.
The afternoon keeps an overcast feel, as cloud reaches about 100% around 18:00. Outdoor plans may still want a flexible backup. Expect visibility near 15.0 km, with poorer spells close to 5.7 km. Daylight runs from 06:35 to 18:51, lasting 12 hours 15 minutes of sunlight today.
Taken together, overcast skies in Merrillville on September 15, 2026 favour indoor or covered options, with temperatures near 33°C.
Frequently asked questions about weather in Merrillville
How warm does it get in Merrillville?
The warmest month in Merrillville is July, with average high temperatures of 28°C. The average temperature during this period is around 24°C.
How cold does it get in Merrillville?
The coldest month in Merrillville is January, with average low temperatures of -5°C. The average temperature during this period is around -2°C.
What is the wettest time of year in Merrillville?
The wettest month in Merrillville is May, with an average of 128mm of precipitation.
What is the driest time of year in Merrillville?
The driest month in Merrillville is November, with an average of 65mm of precipitation.
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